I meant playing with SD vanilla, you can add LoRA/TI/Dreambooth for custom stuff, but for generics, you need to improve your main pipeline in order to not show bad results.
You can also check aesthetic score of results, or hide results w artifacts etc.
My bet is that as a demo tihs has low steps (cheaper replicate tab), and with a different diffuser (some work better for photoralism than others) and more steps results would already improve greatly
Check out the code, and improve it thats what I meant.