Hello Shining Star, I think that people here can guess what is going on, but without more information we can't really help you as we may be guessing wrong.
Ideally, your number one solution is to get a trainer. You may find that one session is all you need, or that you and the horse enjoy learning and you want to carry on with the trainer.
A much poorer alternative but better than nothing would be to post a video here of you riding your horse. That would certainly give you kore valuable feedback than you will get at the moment.