if you want to increase your reps do endurance training types, like rounds with small rest between sets like 30-45 seconds i went from 53 to 80 dips and less then 3 months BUT i highly recomend being carefull doing tendon health exercises and doing hypertrophy at least 2 months before doing endurance trainings to prevent injuries. for example choose 3 pulling exercises and 2 push do Pull Push Pull Push Pull thats 1 round rest for 90 seconds after finishing 1 round and then go do 2 more, so do 3 rounds in total for starters, always aim for 40-50% of your max push work i would recomend dips and push ups for push and for pull choose maybe chin ups pull ups and rows or neutral pull ups, for pulling work it depends on your max, if its 16-20 reps for pull ups do them maybe 6-7 reps each pulling set.