What Am4 Cpu to get for 5080ti?

So im building a new mini itx pc and its mostly built. Im have a 5060 ti 16gb, 32gb of ddr4 3600 ram and a 750 watt psu. I feel like im at a decent spot for most games to be 1440p 60+ fps. The only thing i feel like holding it back is my cpu, its a ryzen 5 3600x. Im looking to upgrade my cpu but not brake the bank.

The only requirements is that its am4 and at most $150.