Undecided Question

How do I improve my skin?

My skin is so dry and it has little bumps!!!!
WITH makeup, it's hardly noticeable and I could care less but without makeup it's awful!

I've tried a lot of different lotions and none of them work or they end up irritating my skin after a few uses :(
I have no idea what to do about the little bumps. They're not pimples there just little irritated spots.

HELP! :)