My wi-fi is often disconnected and requires a reconnection to make it work again. I had Ubuntu 20.10 and didn’t have a similar problem with it on it. I disabled ipv6 and mac randomization but it didn’t help
Network:
Device-1: Intel Ethernet I219-V driver: e1000e
IF: enp0s31f6 state: down mac: e8:6a:64:ad:c2:eb
Device-2: Intel Wireless 8265 / 8275 driver: iwlwifi
IF: wlp59s0 state: up mac: d8:f2:ca:e5:be:3d