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!