This wifi adapter need rtl8188gu driver. I installed 8188gu driver. The driver 8188gu.ko is installed in /lib/modules/6.1.38-1-Manjaro/drivers/net/wireless/8188gu.ko
but wifi adapter is not shown. modprobe 8188gu does not work and insmod 8188gu shows module is loaded. lsmod shows 8188gu is loaded.
I get the feeling you did it manually while that is not recommended. I’d say remove everything and go from there.
There seems to be a driver in the AUR:
$ pamac search 8188
[...]
rtl8188gu-dkms-git r9.3dddc96-1 AUR
Linux driver for Realtek RTL8188GU
[...]
So best would be to install it using pamac:
pamac build rtl8188gu-dkms-git
Hope it helps!
a Reminder: While use of the AUR is possible, it’s neither recommended nor supported.
I recommend pamac instead of pacman, especially for newcomers as pamac was developed by Manajaro (developers) for Manjaro and just takes care of more thing than pacman.