Do I have regret or just anxiety?

Hi, i just got a minilop and picked him up last friday. I wanted to have a bunny for a very long time and i did my research, and i know theyre not that easy to take care of. I build an xpen in my bedroom and have all the enrichments and toys. I am currently littertraining him and he does great with it at night too. I wanted him to leave the x-pen and encouraged him to do so by putting carpets. Now yesterday he finally did it, and he binky'd around and was so happy. Then he peed on my blanket and today I let him out again and he peed on the carpet. I don't know what to do. I want to maybe have my own place soon since I'm living with my parents but I don't know how he's gonna be happy if i don't let him out. But I really want to have a carpet and a cute livingroom in my next place. I have feelings of regret, because I want him to be happy but I'm a very tidy person and I have a lot of anxiety. I feel so stupid and he's so cute I dont know what to do. He is fixed and he is born on the 15th of July 2024. Please give me advice on what to do. I don't want to give him away because that would also break my heart. I am currently having a cold so that makes me fear that I might even be allergic and I have so much anxiety right now. Please help <3