Kowal
A left hand curve is pretty common but yours is extreme you may want to seek medical advice.
I have a v slight kink and I have an exercise that straightens it (temporarily anyway) immediately, I’ll try and describe it and encourage you to give it a shot
In the shower with everything hot, jelq a little to get some blood in there, then hold the base with an ok grip and squeeze so the unit blimps up, now with yr other hand with another ok grip hold the unit a little ways below the glands, and squeeze also
Now simultaneously push the hand together and also bend the unit in the opposite direction of the curve
You should get a pretty sick pump from this, all gnarly and veiny, when you release is should be mostly straight
The other thing I would recommender is to completely stop masturbating and pe ing with your current hand and only use the opposite one
Good luck