Is my relationship falling or is this normal ?

Me and my fiancée have been together over an year now and we have had many fights and break ups and there caused by me mostly . But we have had many great times and have had many great memories and planned out our future even still . We smile and laugh and cry and fight ..

I hate fighting but it happens a lot ..

We both love each other and show it daily but we just fight so much . Over nothing important normally but sometimes over me drinking alcohol . I am an alcoholic but not as bad as I used to be

I have mental issues such as depression and self harming

I m also transgender and have OCD and so on. She has depression and self harm issues to. We know it s harder with issues such as those but we still love and care forbone another .. she has said she can t deal with me drinking anymore and she knows I can t help it fully but I need to choose . She says she loves me and that she s in love but she can t handle the stress anymore . I fully understand but it s hard ..

I ve done so much for her and I do love her but I m having a lot of depression in life and deal with mental things daily and I do want us but I fail us a lot . I want advice on what others think and nothing stupid please .. I m just really down and want to know should we keep trying and is any of this normal??