high and unstable cpu load

my mac is starting to have unstable and high cpu load for example whenever only 4 apps including notes, safari, chrome and finder are open, it suddenly becmoes 40 or higher cpu load. and when i switch to another app it goes down to reguller 10% or even 6% cpu load.this is my history:

i ve been playing just lite games like Minecraftbedwars (with only 21% cpu load and 75 c tempature) and also i was using final cut pro that i got 40% cpu load and high temp.(like 85)and finally i used obs while recording from an app that i. got about 20 to 30 % cpu load and about 75 temp again.(i have been using coolpad all the time...)

my cpu load is so unstabel and i dont know if thats normal. i luanched a ton of apps at the same time and it goes high to 99% and then fall to 15%

is the problem with my gaming or somehitng else?