Dietpi x86 image cpu Temperatur high

Hi I installed dietpi on my mini pc

cpu: j4125
Ram 8gb ram
SSD 256gb

Installed software: Plex Server, sonarr, radarr, sabnzbd, xrdp, wireguard

Everything works great but the temperature are bit high 73-75 Celsius if I open terminal I get a warning 75 Celsius reducing the life of your device

did you checked if there is a running service causing high load? You could use htop

ok now slowly it get down 58 celsius

you could use F5 inside htop to switch the view and have it sorted by CPU usage.
According your screen shot, it seems you used firefox. At least it is the process which consumed most.