Compose key problem

Today I configured the Compose key for the English (US, euro on 5) keyboard layout. I have an issue with the compose key: Half the time it does not register. This is not very useful when writing text, because then you constantly make mistakes when for example "e is typed instead of ë. Is there another better solution for this except for using a layout with death keys?

inxi --full --admin --verbosity=7 --filter --no-host
System:
  Kernel: 5.10.2-2-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.10-x86_64 
  root=UUID=b3996e9d-c408-4bd5-8a4e-54d10769c325 rw 
  resume=UUID=95e3f7ea-da51-4d38-91df-ec0a6e2b5ae1 
  Desktop: Xfce 4.14.3 tk: Gtk 3.24.23 info: xfce4-panel wm: xfwm4 
  dm: LightDM 1.30.0 Distro: Manjaro Linux 
Machine:
  Type: Desktop Mobo: ASRock model: Z87 Extreme4 serial: <filter> 
  UEFI [Legacy]: American Megatrends v: P3.50 date: 03/11/2018 
Memory:
  RAM: total: 7.7 GiB used: 2.59 GiB (33.6%) 
  RAM Report: 
  permissions: Unable to run dmidecode. Root privileges required. 
CPU:
  Info: Quad Core model: Intel Core i5-4570S bits: 64 type: MCP 
  arch: Haswell family: 6 model-id: 3C (60) stepping: 3 microcode: 28 
  L2 cache: 6 MiB bogomips: 23156 
  Speed: 1098 MHz min/max: 1100/3600 MHz Core speeds (MHz): 1: 1098 2: 1097 
  3: 1098 4: 1097 
  Flags: abm acpi aes aperfmperf apic arat arch_perfmon avx avx2 bmi1 bmi2 
  bts clflush cmov constant_tsc cpuid cpuid_fault cx16 cx8 de ds_cpl dtes64 
  dtherm dts ept ept_ad erms est f16c flexpriority flush_l1d fma fpu 
  fsgsbase fxsr ht ibpb ibrs ida invpcid invpcid_single lahf_lm lm mca mce 
  md_clear mmx monitor movbe msr mtrr nonstop_tsc nopl nx pae pat pbe pcid 
  pclmulqdq pdcm pdpe1gb pebs pge pln pni popcnt pse pse36 pti pts rdrand 
  rdtscp rep_good sdbg sep smep smx ss ssbd sse sse2 sse4_1 sse4_2 ssse3 
  stibp syscall tm tm2 tpr_shadow tsc tsc_adjust tsc_deadline_timer vme vmx 
  vnmi vpid x2apic xsave xsaveopt xtopology xtpr 
  Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled 
  Type: l1tf 
  mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled 
  Type: mds mitigation: Clear CPU buffers; SMT disabled 
  Type: meltdown mitigation: PTI 
  Type: spec_store_bypass 
  mitigation: Speculative Store Bypass disabled via prctl and seccomp 
  Type: spectre_v1 
  mitigation: usercopy/swapgs barriers and __user pointer sanitization 
  Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional, 
  IBRS_FW, STIBP: disabled, RSB filling 
  Type: srbds mitigation: Microcode 
  Type: tsx_async_abort status: Not affected 
Graphics:
  Device-1: NVIDIA GP107 [GeForce GTX 1050 Ti] vendor: Micro-Star MSI 
  driver: nvidia v: 455.45.01 alternate: nouveau,nvidia_drm bus ID: 01:00.0 
  chip ID: 10de:1c82 
  Display: x11 server: X.Org 1.20.10 driver: nvidia display ID: :0.0 
  screens: 1 
  Screen-1: 0 s-res: 3600x1080 s-dpi: 96 s-size: 953x286mm (37.5x11.3") 
  s-diag: 995mm (39.2") 
  Monitor-1: DVI-D-0 res: 1680x1050 hz: 60 dpi: 90 
  size: 474x297mm (18.7x11.7") diag: 559mm (22") 
  Monitor-2: DP-0 res: 1920x1080 dpi: 93 size: 527x296mm (20.7x11.7") 
  diag: 604mm (23.8") 
  OpenGL: renderer: GeForce GTX 1050 Ti/PCIe/SSE2 v: 4.6.0 NVIDIA 455.45.01 
  direct render: Yes 
Audio:
  Device-1: Intel 8 Series/C220 Series High Definition Audio vendor: ASRock 
  driver: snd_hda_intel v: kernel bus ID: 00:1b.0 chip ID: 8086:8c20 
  Device-2: NVIDIA GP107GL High Definition Audio vendor: Micro-Star MSI 
  driver: snd_hda_intel v: kernel bus ID: 01:00.1 chip ID: 10de:0fb9 
  Sound Server: ALSA v: k5.10.2-2-MANJARO 
Network:
  Device-1: Intel Ethernet I217-V vendor: ASRock driver: e1000e v: kernel 
  port: f040 bus ID: 00:19.0 chip ID: 8086:153b 
  IF: enp0s25 state: up speed: 1000 Mbps duplex: full mac: <filter> 
  IP v4: <filter> type: dynamic noprefixroute scope: global 
  broadcast: <filter> 
  IP v6: <filter> type: noprefixroute scope: link 
  WAN IP: <filter> 
RAID:
  Message: No RAID data was found. 
Drives:
  Local Storage: total: 4.47 TiB used: 1.14 TiB (25.5%) 
  SMART Message: Required tool smartctl not installed. Check --recommends 
  ID-1: /dev/sda maj-min: 8:0 vendor: OCZ model: VERTEX4 size: 119.24 GiB 
  block size: physical: 512 B logical: 512 B speed: 6.0 Gb/s 
  serial: <filter> rev: 1.5 
  ID-2: /dev/sdb maj-min: 8:16 vendor: Crucial model: CT525MX300SSD1 
  size: 489.05 GiB block size: physical: 512 B logical: 512 B 
  speed: 6.0 Gb/s serial: <filter> rev: R021 
  ID-3: /dev/sdc maj-min: 8:32 vendor: Crucial model: M4-CT256M4SSD2 
  size: 238.47 GiB block size: physical: 512 B logical: 512 B 
  speed: 6.0 Gb/s serial: <filter> rev: 040H 
  ID-4: /dev/sdd maj-min: 8:48 vendor: Seagate model: ST4000DM004-2CV104 
  size: 3.64 TiB block size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s 
  serial: <filter> rev: 0001 
  Optical-1: /dev/sr0 vendor: HL-DT-ST model: BD-RE BH16NS55 rev: 1.02 
  dev-links: cdrom 
  Features: speed: 48 multisession: yes audio: yes dvd: yes 
  rw: cd-r,cd-rw,dvd-r,dvd-ram state: running 
Partition:
  ID-1: / raw size: 115.23 GiB size: 112.93 GiB (98.00%) 
  used: 86.6 GiB (76.7%) fs: ext4 dev: /dev/sdb1 maj-min: 8:17 label: N/A 
  uuid: b3996e9d-c408-4bd5-8a4e-54d10769c325 
  ID-2: /run/media/datiswous/Gamez raw size: 362.09 GiB 
  size: 355.41 GiB (98.15%) used: 334.35 GiB (94.1%) fs: ext4 dev: /dev/sdb3 
  maj-min: 8:19 label: Gamez uuid: 2d458847-3f60-4770-a7b8-8e05511a59ae 
  ID-3: /run/media/datiswous/Gamez2 raw size: 238.47 GiB 
  size: 233.73 GiB (98.01%) used: 220.66 GiB (94.4%) fs: ext4 dev: /dev/sdc1 
  maj-min: 8:33 label: Gamez2 uuid: 3574211e-187d-4839-937d-0c887485b381 
  ID-4: /run/timeshift/backup raw size: 796.21 GiB size: 782.72 GiB (98.31%) 
  used: 524.04 GiB (67.0%) fs: ext4 dev: /dev/sdd5 maj-min: 8:53 
  label: Filez4 uuid: 6bc317c5-ead9-48cf-9265-45ba01a2eee3 
Swap:
  Kernel: swappiness: 60 (default) cache pressure: 100 (default) 
  ID-1: swap-1 type: partition size: 11.72 GiB used: 0 KiB (0.0%) 
  priority: -2 dev: /dev/sdb2 maj-min: 8:18 label: N/A 
  uuid: 95e3f7ea-da51-4d38-91df-ec0a6e2b5ae1 
Unmounted:
  ID-1: /dev/sda1 maj-min: 8:1 size: 100 MiB fs: ntfs 
  label: Door systeem gereserveerd uuid: 3658C89F58C85EED 
  ID-2: /dev/sda2 maj-min: 8:2 size: 119.14 GiB fs: ntfs label: N/A 
  uuid: 743CE3B93CE37510 
  ID-3: /dev/sdd1 maj-min: 8:49 size: 128 MiB fs: <superuser required> 
  label: N/A uuid: N/A 
  ID-4: /dev/sdd2 maj-min: 8:50 size: 976.56 GiB fs: ntfs label: Files1 
  uuid: 0094ADCB94ADC38E 
USB:
  Hub: 1-0:1 info: Full speed (or root) Hub ports: 2 rev: 2.0 
  speed: 480 Mb/s chip ID: 1d6b:0002 
  Hub: 1-1:2 info: Intel Integrated Rate Matching Hub ports: 6 rev: 2.0 
  speed: 480 Mb/s chip ID: 8087:8008 
  Hub: 2-0:1 info: Full speed (or root) Hub ports: 2 rev: 2.0 
  speed: 480 Mb/s chip ID: 1d6b:0002 
  Hub: 2-1:2 info: Intel Integrated Rate Matching Hub ports: 8 rev: 2.0 
  speed: 480 Mb/s chip ID: 8087:8000 
  Hub: 3-0:1 info: Full speed (or root) Hub ports: 14 rev: 2.0 
  speed: 480 Mb/s chip ID: 1d6b:0002 
  Device-1: 3-3:2 info: Brother Industries HL-1430 Laser Printer 
  type: Printer driver: usblp interfaces: 1 rev: 1.0 speed: 12 Mb/s 
  chip ID: 04f9:001a 
  Device-2: 3-4:3 info: SteelSeries ApS Sensei Raw Gaming Mouse 
  type: HID,Mouse,Keyboard driver: hid-generic,usbhid interfaces: 4 rev: 1.1 
  speed: 12 Mb/s chip ID: 1038:1369 
  Hub: 3-9:4 info: ASMedia ASM1074 High-Speed hub ports: 4 rev: 2.1 
  speed: 480 Mb/s chip ID: 174c:2074 
  Device-1: 3-13:5 info: Logitech M90/M100 Optical Mouse type: Mouse 
  driver: hid-generic,usbhid interfaces: 1 rev: 2.0 speed: 1.5 Mb/s 
  chip ID: 046d:c05a 
  Hub: 3-14:7 info: Genesys Logic Hub ports: 4 rev: 2.0 speed: 480 Mb/s 
  chip ID: 05e3:0608 
  Device-1: 3-14.2:8 info: Trust Silent Wireless Mouse type: Mouse 
  driver: hid-generic,usbhid interfaces: 1 rev: 1.1 speed: 12 Mb/s 
  chip ID: 145f:0256 
  Hub: 4-0:1 info: Full speed (or root) Hub ports: 6 rev: 3.0 speed: 5 Gb/s 
  chip ID: 1d6b:0003 
  Hub: 4-5:2 info: ASMedia ASM1074 SuperSpeed hub ports: 4 rev: 3.0 
  speed: 5 Gb/s chip ID: 174c:3074 
  Device-1: 4-5.2:3 info: Genesys Logic Card reader type: Mass Storage 
  driver: usb-storage interfaces: 1 rev: 3.0 speed: 5 Gb/s 
  chip ID: 05e3:0738 serial: <filter> 
Sensors:
  System Temperatures: cpu: 26.0 C mobo: 32.0 C gpu: nvidia temp: 48 C 
  Fan Speeds (RPM): fan-1: 558 fan-2: 408 fan-3: 0 fan-4: 0 fan-5: 301 
  gpu: nvidia fan: 0% 
  Power: 12v: N/A 5v: N/A 3.3v: 3.33 vbat: 3.30 
Info:
  Processes: 221 Uptime: 2h 31m wakeups: 0 Init: systemd v: 247 Compilers: 
  gcc: 10.2.0 Packages: pacman: 1707 lib: 476 flatpak: 0 Shell: Bash 
  v: 5.1.0 running in: xfce4-terminal inxi: 3.2.01