Hi m 23 yr male I obeserved that I am having wet dreams from last a yr if I don't mmasturbate. When I wake up I feel very tired. Pls help me coz I tht.

Timing. Likely feeling tired when waking due to the timing of the nocturnal emission (=wet dream). They are normal for your age, but so is the alternative you identified to prevent them. Timing prior to bed may improve situation.