Should I play on deathmatch servers for players that are better then me? Hi

I've been trying to improve my aim, and game sense, and I thought that if I play deathmatch, it would help.However, I find the valve deathmatch servers fairly easy, and I dont seem to improve much beyond where I am right now.So should I play on deathmatch servers with players that are better then me, where I will probably be completly outmatched until I get used to it, or just play on the valve ones, which give me an easier learning curve

Thanks!