Ey bossman, life goes on you can't control it!
Find someone else and move on, things happen for a reason, might be difficult at first but it goes away with time, don't waste your life re-living the past. You need to make room for the future and yourself, put yourself first and under as little pressure as possible, life gets better we all go through tough times trust me! If she left you then she isn't meant for you, you will heal with time and meet someone better that's gonna stay with you for life!
Love you man hope you're doing well <3 !