My webcam is blury, and I dont know why. It hasnt got the protective thing on it anymore as i took it off. Ive had a look through the settings and i cant find anything to fix it. I dont know whether its my cam or if its the settings. I gave it a gentle wipe down with a dry cloth, however, I dont think thats the problem, or is it?

Try taking a cotton swab and gently wiping the lens, using a small amount of rubbing alcohol. The alcohol will clean any dirt or smudges off of the webcam and will not damage the lens. Make sure the swab you use won't leave any fuzz behind.

I don't know what else would work at this point, seeing as I've never heard of a setting/program that blurred the webcam (not saying it doesn't exist), but I wish you luck!