17 Male, constantly hitting plateaus and looking for advice.

[TLRiot]

As of me writing this, I am 17 and have been working out seriously for a few months, (5 to be exact). I know it seems like an extremely small amount of time, but I've been stuck bench pressing 125x2-3 reps for 3 weeks now. I track everything I eat and I lift 5 times a week, training every muscle group twice. Just looking for advice in general on how to break through and get stronger?


Bench: 125x3 reps
Squat: 205x3 reps
Deadlift: 260x2 reps.

I do compound lifts like these within the 2-6 rep range but for things like curls, Arnold press and leg extensions I do like (6-8 reps)