I chose to jump him on my own because I am getting over some severe confidence issues and thought working out the jumps by myself would help,
Instead of researching bits, perhaps you should consider spending time exploring the topic of ‘judgement.’
It’s a big, long chapter that is often skipped over by riders to whom “horsemanship” does not come naturally.
It does not matter what bit is in a horse’s mouth when the rider on the other end of the reins is an student pilot trying to fly a plane without being checked out in it first.
Absent any instinct or aptitude, taking lessons is at the head of my list of recommendations.