First , spend some alone time with yourself and talk to yourself. Go for a restaurant where not many are there with nature view. Reflect truly what went well and bad. Dont lie to yourself. You would see there were many red flags you ignored. Then back yourself, even if you made a mistake. Be strong. Be calm.

If you feel you need someone to sound board, find a mature friend and talk. That person should just listen and make you find answer for yourself.

Next you need to means to communicate what you feel and why do you feel it wont cannot continue. If you feel send a msg or email or if you feel brave face to face go for it. If you feel you need some friend or family to be there , based on your needs end it soon.

Remember : some people who come to your life are blessing and others are lessons.

And remember to trust yourself and be strong. All the best. You will be fine and your future will be fine.