are you looking for something specific like 2d or 3d, a specific style, full body or just a portrait, any animations or facial expressions
there is an addon for Blender called MB lab that lets you create humans and it has a weight slider. I personally wasn’t a big fan of it but that might just be my taste
there is V-katsu for anime style models. it doesn’t have a weight slider (last I checked) but you can export the models and edit them in Blender (here is a thread to do that). it might take more work than you are willing to put in though