I'd suggest contacting a few local lodges and get to know the members before you commit to one. You have to feel comfortable with the makeup and ambiance of the lodge just like any social group. You will almost certainly need to be proposed and seconded again as a joining member.
Finally recognise that while you have completed your three degree ceremonies it is expected that there is still a lot for you to learn in freemasonry. The ritual most commonly used in England suggests you to 'make a daily advancement in masonic knowledge' and you are taught the masonic ceremonies are 'veiled in allegory' meaning they are meant to be gradually understood over time as you see them repeated for new candidates, and by taking part yourself in the various officer roles in the Lodge. Don't feel bad that it was too fast - yes it's disappointing that you ended up in that situation, but even without it, masonry is not meant to be understood in one go. Don't be hard on yourself.