Got really drunk on own in pub

There's this pub I go to cos I feel safe as it's a bit out of the way of town. I'm a 24 year old female & drink alone. I normally pace myself and don't get that drunk.

I got very drunk last week as I was sad. I only know how long I was there and what I had from my bank statement.

However I stayed just over 2 hours & had: 4 double vodkas, a single vodka and 2.5 pints. There's a two hour gap then there's transactions at another pub a short walk away. I have no idea what I did in those two hours.

I have no memory after my second drink as I had been drinking earlier. Drinking at that pace is embarrassing enough normally I hide it better in pubs.

I could have Passed out? Fell? Embarrassed myself.

I woke up with many servere bruises on my arms and legs. Particularly on my shins.

I lost my keys in the pub and had to go back the next day. The bar man who always serves me just said "you're drunk"

I feel awful if the bartender had to put up with me blackout drunk. I hope I wasn't rude to him. Maybe I was functional maybe I passed out I don't know. I feel like such a prat. And I feel like I need to apologise.

It's quite a nice pub, and the bartenders nice albeit a grumpy man. I don't know what to do

I was wondering if anyone else has ever been in a similar situation

AITA ? Should I go back and apologise