For a first VN it's definitely not bad, I know many people who are the same level as you, or even worse for their first one.
I think you personally did good for the limits that're holding you back. Less people, and assuming worse specs than other creators. I don't think you should feel down about this VN at all, that is if you do feel down about it. I like aspects about it, not many VN's you actually get to interact like fighting (reminds me of some steam war games), sure it lacks choices, but that takes so much more time than you probably have I assume.
If you continue, I may check it out when I have the time, and I wish you the best.