OP, people are getting giggly at your typos. I suspect, people, that she may be using a talk to text thing of some indeterminate and poorly adjusted type, and not really able to go back and correct her spelling. Even with the correct spelling, however, the grammar is suspect, but I am sure the OP is an honest horse owner and she has valid concerns.
OP, it sounds to me like you are a good horse owner, but you sound inexperienced, based on the many aspects of horse handling you are doing incorrectly. You are not a bad horse owner and should not sell your horse, unless you feel you are unsafe around the horse, but I do think you are uneducated about horses’ behaviours and how to handle them.
For example, if a horse bites or kicks, running them around and arena would do nothing to instill good behaviour on this account. You need to respond to a horse withing three seconds in the same manner another horse would, such as a bite or kick in return, which we as humans would not do to horses. Otherwise, you need some more advance skills to address these kinds of behaviours, and running a horse around a ring, tying their head to their tail (other people do this), making them stand tied up without water (other people do this) all mean nothing to the horse except that you are stessing him out.
When horses bite when you touch them, it is almost always a pain response, and it is very frequently a sign of ulcers. Your vet’s rather elaborate belly palpatations will in no manner indicate ulcers or no ulcers. You can either treat for ulcers and see if the behaviour changes, which is what many of us will just do, as it costs about as much as a vet visit, or you can have a vet come and scope.
Until you do one of the two suggestions above, you have no way of knowing if your horse, who is exihibiting ulcer symptoms, actually has ulcers.
Good luck.