well you are going to have to change the motherboard,since you already have the best cpu for that motherboard.
If you are on a 200$ budget i suggest this:
https://pcpartpicker.com/list/rcxB4q
If you are on a 300$ budget i suggest this:
https://pcpartpicker.com/list/CYxHQq
If you are on a 400$ budget i suggest this:
https://pcpartpicker.com/list/xxtfzN
or you have other option which is to go with old i7 (something like 3770k or 4770k) and overclock it.They will perform better than then the 1st pcpartpicker list (the one with ryzen 3 1200),and possibly better than the second list (the one with 1600AF).
For that you will need a good motherboard,also note that you will need to buy these parts used since they are not manufactured anymore.Used parts are pretty cheap and if they dont have any visible flaws,they are 'ussually' good.Of course you can buy these old components unused from amazon which will cost you about 10x more.
Heres the list i made for i7-3770k:
https://pcpartpicker.com/list/62YFNq
The prices for the 3770k build are far from real.In my country i can find all these parts for around 250$-300$ or less.
Unfortunately the list for 4770k cant be made on pcpartpicker since there are no good parts listed there.