Your English is great, and I did in fact see your feedback! Thank you for your comment, I like that there are things you enjoy but also things you were able to critique. These sorts of comments are very helpful to improve my writing.
Some other readers have offered similar criticisms before. I completely acknowledge that more choices/customisation is something a lot of people would like, but at this point I probably won't change any of that for this particular story.
One reason is simply because I'm just too far into it at this point and would rather finish it than start changing things. It would simply be too much effort. Another reason is that I honestly prefer having an MC that is a bit more pre-established and not a complete blank slate. I asked the members of my Patreon about their opinion regarding that at some point, and the majority agreed or didn't care, so I decided to leave it like that. For me as a writer, it's easier to take something like character development into consideration if the MC is not too variable, but I get that readers have their own imagination and expectations.
In the end, it all comes down to how much time I have. I think the reasons why most IFs are eventually abandoned or take a decade to get finished is because writers bite of more than they can chew. Still, your feedback is very valuable, and I'll take it into consideration for future chapters/projects!