Elegoo FDM is low quality and cheap, I have not used their filament but if it’s like their FDM printers I am surprised it even prints. It’s odd as their resin printers are some of the best.
I don’t think the issue is fully solvable on any printer, but I wish you luck if you continue to work on improving it. I do think you would get better results using quality filament, but it’s not going to be perfect. In the low price filament range, I’ve had good results and even colors with Sunlu PLA+ with the speed limited to 12 volumetric, but I haven’t (obviously) tried this particular model.