my arms are weak and it doesn't feel as intuitive as running/walking
it's difficult to give advice on this point because it might be a variety of things
it could be your grip, which is totally normal and should use straps for that movement
it could be not that your arms (bicep, tricep, forearm) are weak, but rather you don't have proper
pulling technique or
pushing technique and you compensate by involving your arms in those movements more than you should
or it could be that your arms are weak and you should train them (it sounds like you are not a novice, so you should try to find exercises that you like for the biceps and triceps)
now with the second point it's even more complicated. The best advice I could give you is to try and learn the biomechanics of your muscles, what the quad does, how it moves, how the glute is involved with it's movement, etc. Try to feel the muscle you are targeting with each exercise. Learn what muscles are involved in each exercise, not by memorization, but by understanding how your body functions
that or just spend 5 years in the gym and you will just kinda know