A Beginner's Mix-Up

Right, so this was my first time eating a girl out and my first time seeing a pussy face to face, so please keep that in mind when you read.

So when I first asked her to be my girlfriend I had to educate myself on “eating”, so I watched a few tutorials and such so I was decently prepared.

Now was the moment, I started undressing her and then started licking and kissing her thighs moving into her vagina where I spread her legs open and started to lick around her clit etc. Then I decided to start fingering. I then SOMEHOW stuck my fingers in the wrong hole apparently, and she said “that’s my fucking arsehole” we then both laughed awkwardly and then I immediately took out my fingers and found the right hole but I think she immediately got turned off and well she didn’t finish when I tried to carry on..

I am not sure how I could make such a mistake but I feel really bad and confused what to do next.. She said it was okay and comforted me but honestly I feel like shit. Give me some advice please 🙏