Intel AC 3165 driver

Yes but doesnt work :upside_down_face:

Not on dual boot. only endeavouros

fastboot is off ?

Maybe try some more options for the WiFi card in /etc/modprobe.d/iwlwifi.conf

options iwlwifi 11n_disable=1 swcrypto=0 bt_coex_active=0 power_save=0
options iwlmvm power_scheme=1 
options iwlwifi d0i3_disable=1 
options iwlwifi uapsd_disable=1 
options iwlwifi lar_disable=1

This would be the next thing to try, imho.

@Franck
The Intel 3165 uses the same firmware as the 7265
You can check what it shows.

sudo dmesg | grep firmware

Edit: As @anon11595408 suggested you may want to try the lts kernel.