Will i ever feel like i made the right decision? like actually really confident in myself? right now I just keep thinking maybe he is changing.
I think you will but it won't be for a while yet. Once you have moved on, become immersed in your new work, new place to live, meet new people etc - you will see that you would have been settling for less than you deserve and be glad you moved on. This is a vulnerable time as being alone in a new city is tough, I went through it last year so I do know how tough.
Right now you are still in the early days of discovery and breaking up. Its completely natural to have doubts, miss them etc. What I would caution against is telling yourself stories i.e like "He is changing" there is no evidence that he has changed, in fact the evidence is to the contrary in blaming your councilors advice etc. You have no rational basis for thinking he has changed - thats just the hopium talking.
i was wondering if you have opinions on the right time it is to start dating. ive heard mixed answers, saying you dont have to be fully healed to start.
i just think ok, one of my goals in life is to have a family. i should maybe start trying to find the one sooner then later?
This might be a bit of a 2x4 and I mean this as kindly as possible but I really think you need to evaluate this intense desire to rush to have a family. I understand that its your goal but its driving you to make very poor choices. For a while you wanted your ex back, despite knowing he is an immoral man, despite knowing you didn't want to marry him, because he was the ticket to having a family. You now want to make the same mistake by rushing in to find anyone who might be a viable father. Bringing children into the world is a massive responsibility. Its not to be done lightly or without serious thought and you should be bringing them into a stable and loving home (as best you can anyway).
Its also the case that life can be unfair and whilst I of course hope that you can have the family you want, what if it were not to happen? You need to find yourself first, and find value in your life beyond a desire to be a mum and wife.
You are still young and have plenty of time, experience your own life before trying to create new lives.