i want to upgrade but i dont want anything expensive? did i hear that right? assuming the bike has formula hubs, you will not gain anything from switching hubs, therefor, there is no effective "upgrade"

as others have mentioned, it's clear from your saddle angle that you dont ride that bike for more than a few minutes at a time, and you probably feel like you're going to fall off the front the whole time. get your bike fit sorted out before tearing your wheels apart, trust us on this one.