Hi @Andy-Lv, aand welcome!
AFAIK kernel 5.14
is EOL (End Of Life) and should be replaced. Preferably by an LTS (Long Term Support) one. So 5.4
, 5.10
or 5.15
, which is set to be the next LTS.
Then, please see [HowTo] Provide System Information, if applicable [HowTo] Post screenshots and links and https://forum.manjaro.org/t/howto-increase-your-chances-of-solving-your-issue/9146.
Hope you figure it out!