Hello to Trigger123.
I have also avoided posting on this thread because you seem to get cross at many of the suggestions that come your way. But you are still here, having the conversations, so kudos to you for coming back.
Firstly, he's a nice looking type of cob. There's a secret you should know about horses like him... They are clever
When you rode him in a trek with 50 horses, he had it easy. He didn't have to think about threats, or spooks, or anything because he was in a big old herd, and was probably happy to follow nose to tail with all his mates. In addition, you had it easy because you were on a relaxed horse surrounded by helpful people and horses.
I think you also rode him at Rhosroyalvelvet's if I am reading this thread right? Before you bought him? If I understand correctly, he had three months or so of training there, sorting out his attitude and generally making him into a nice riding horse.
Then his situation changed BIG TIME. He came to stay with you. In a new home. With new companions or no companions? Suddenly he is not as secure as he was before and he needed a leader.
Don't underestimate how much this horse has read your body language since he arrived. You might think that you weren't displaying nerves, and that you were exuding confidence... But he will have seen straight into the recesses of your brain and he will have spotted all the questions you had about how to handle him, how to correct him, how to ride him forward.
And once he saw your weaknesses, you were done for and caused the problems you came here about.
But all is not lost!! This can be as easily rectified as it has happened. Go to your local tack shop, or talk to your friends, or 'phone up the local pony club, or ask at the vets. Find an instructor who will come out to your place - this might cost £20-£40 (sorry, not sure now if you are in the UK or Ireland). Have a lesson in your field. If you can save up money for his bridle, or his vet bills, or his winter feed, then you can get yourself a lesson. And you will be so much happier with a few more tools under your belt.
Handling a pushy Cob is a skill in itself whether in the ground or in the saddle. There is nothing to be lost, and all to be learnt by having a couple of lessons.