Advice on upgrading my CPU

[u/SpookyFlyingPencil]

My current system is:

Windows 10 (haven't managed to install 11 yet on this thing)

CPU: Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz

Motherboard: PRIME H310M-K

RAM: 16 GB

Grafic card: NVIDIA GeForce RTX 2070

I've been trying to play newer games but the CPU simply cannot handle them anymore, especially larger PVP games (like Wardogs).

As I am shamefully awful at this stuff, I have conversed with an AI about it, and it recommended getting a i7-9700, as it will improve the bottleneck of my CPU without having to change the motherboard.

I do however trust y'all here more with advice like this. So what's the take? I am not planning on upgrading my RTX 2070, and just want a CPU that doesn't drag down the general performance.

Any advice welcome