Suggestion for Upgrade?

I am currently using Ryzen 9 9700X and RX 7800XT - and currently thinking of upgrading it.. but mainly using the PC on 3440x1440p

My question is, should I? I might need to sell my Legion Go in order to upgrade. (I don’t use it that much, since I don’t travel a lot and also have Gaming Laptop).

What do you guys think? Thanks in advance yall!