You buy a APU for the excellent integrated graphics.
But, there are no real good upgrades, particularly for a gamer.
If you install a superior discrete graphics card, you will have thrown away the big advantage of the APU.
Then, you are left with a relatively weak cpu. Most games depend on only a few fast cores.
Bottom line.....
What you get with a APU is what you will live with forever.
But... if the primary game depends on fast graphics, then something like a GTX1050ti might be appropriate.
Any discrete graphics card can be moved to a new pc build later.
What is the current psu?
Anything stronger than a GTX1050ti may require a stronger psu.