You should report the garuda-inxi output as was likely requested when posting.
Especially in this case, where hardware is involved.
I don’t have any experience to share, this is what I found online:
Undervolting CPU - ArchWiki
GitHub - georgewhewell/undervolt: Undervolt Intel CPUs under Linux
paru -Ss undervolt
paru -Ss corectrl
See also Corectrl will not allow overlock/undervolt after updating kernel
If you can find your way from there, good, otherwise if you have any doubt wait for someone with experience to give advice.
But without knowing your hardware, that is not possible. garuda-inxi please.
Last but not least, welcome.