Fried Upload Quality

everytime i try to upload an image on a website or whatever as a profile picture, it would be low quality, im talking VERY pixelated, not all but MOST, the website is completely fine but there's just something wrong about my firefox, i try to have a profile picture? LOW QUALITY, tiktok? LOW QUALITY, etcetera? LOW QUALITY, at first i thought it was just the website that was broken, but its my firefox, i tried to do everything but just cant fix it, "UPDATE YOUR FIREFOX!!" it is the latest version already, just give me tips, if nothing works, firefox, fix the issue, its probably a rendering issue, if i download an image right, good quality, nothings wrong, and when i have it as my profile picture, instantly pixelated, basically, good quality → upload → low quality