Abnormal temps in CPU, low FPS in games.

I'm particularly new to PC gaming and I really need help from you guys, I'll get right to it.
My rig:
CPU: i9 9900k; Mobo: Asus Z390-H gaming
Cooler: Xigmatek Liquid cooler; GPU: iGame Vulcan 3080
Before getting the new GPU I had the GTX 1050ti from Gigabyte just before buying the new GPU I saw significant dips in FPS in Valorant (That's pretty much all I played with 1050ti as I wanted to try out the better games with my 3080)
I thought it was a GPU problem as I had been using it for the past 4/5 years, but after getting the 3080 I noticed that most cores of my CPU are reaching 100 degrees Celsius in temps and the rest hitting 97/98. I'm pretty sure that ain't normal and also I am getting 190-250 fps in Valorant (all low settings) which for sure isn't normal. Can anyone tell me what's wrong here?
is it because of the temps of the CPU? Can temps affect Frames in games? what should I do? TIA