REVERT - BROKE FAST DAY 1 AND DAY 2 - what now?

I'm a 27year old female revert. I come from a very troubled background which led to me having severe bpd and DID (like actually diagnosed at 15 with bpd way before it was a "fashion choice") and addiction issues. Subhanallah I haven't struggled with alcohol or drug addiction since my shahada.

It's my first ramadan. On day 1 I overslept due to me waking up with such a bad cold that my voice was raspy, I went back to sleep, and didn't have suhoor and also smoked my vape at work (because I missed suhoor and didn't smoke at all) I became irritated at work and hit my vape. I didn't eat or drink until iftar.

Day 2 I got into a very big argument with the person I'm supposed to get married to. I intentionally picked up my vape and hit it. After successfully not eating, drinking or vaping the whole day. I even woke up before suhoor today and made my niya proper. I also made wudhu and salah. I asked for forgiveness.

I feel like a failure. What do I do?

I'm alone with no family to help or motivate me. No friends. I do iftar and suhoor alone at home. I dunno whether I should continue or just give up. I feel sad and like a complete failure.