Question Is it complicated to install a new MB?

Dec 14, 2021
In order to get a real good GPU I'll need to replace the whole PC (cpu - my current one is 4th gen, mb because of cpu, I heard I'll need a new ram too, maybe psu..)
Technically if I'll go for it, can I install these stuff (epecially the mb which seems the most complicated) by myself without any prior knowledge? Are guide videos on the internet good enough? I'm afraid I may do a mistake and damage anything
And, will I need to buy a new case or I can stay with my own? How does it work
I never done anything like this before. Except removing and installing a gpu which is super easy.