I go relatively heavy on them (fail on 6-8 reps) because my grip strength affects my bench press, however i have started to feel some moderate pain on my left wrist (joint), it happens when i try to squeeze something. Is this normal? Also are there any other exercises that possibly don’t use the wrist joint as much?
That kind of pain is not normal. Deadlift is a great exercise for grip strength, as are grip trainers. Our wrists and forearms grow and strengthen naturally via routines where grip is essential, as above. Do not use straps. Chalk should be sufficient if having issues.