Yo! Since this is a BL title, I'm gonna give a crack at giving it some feedback.
While I'm not really familiar with the LitRPG format, I'd say you might want to continue for a few more chapters to see if everything works out, since you're literally sitting on a gold mine here. Isekai and LitRPG are pretty popular genres in SH, and I don't think I've seen too many BL titles take on a seme protagonist coupled with these gamer terms - in terms of concept, I'd say you're on the right track overall.
What you have going on is pretty fun for a casual read. This character:
Is me in a nutshell. Except I'm handsomer, of course.
In terms of critique.... uhhh.
I don't generally give them since it's not really my thing to point out errors, but I suppose I'll try. Like the others have mentioned here, one of the flaws you seem to have is the readability of your story. Large blocks of paragraphs are very confusing to the eye, especially when multiple dialogues are involved.
Since a lot of readers are on mobile devices nowadays, it's not a bad idea to break them up dialogue per dialogue and maintain short paragraphs to reduce strain to their eyes.
Aside from that, I'm spotting a relatively high number of SPAG errors as well, which may have contributed to the current dwindling or low readership you seem to be experiencing. Here are a few examples of that found in the text:
And so forth.
Grammarly and MS Word won't catch them all. I'm ESL, so I know using machines to pick out our grammatical errors for us is a terrible habit we tend to pick up over time. One of the ways is to counter this is to manually go through the document again in order to edit and proof it ourselves.
It's either that, or you can try converting it using text to speech applications so you can listen to it and catch your errors using an audio technique. Alternatively, you can pay a professional editor to proof your story. If I'm not mistaken, editors are paid by amount of words. It can get pretty pricey, so unless you have a Patreon account or a method of sustaining this, it's probably not something you'd want to do for too long.
It's tempting to post a story raw because we're excited (I'm super excited too!), but I wouldn't really recommend posting it immediately after writing it up. I still spot errors in my own works after sifting through them three times. But if it helps, combing through it at least once or twice manually does pay off in terms of readership.
It shows our readers we care about their comfort, and that usually goes a long way in building reader trust. They don't always comment on our works, but some might recommend it to others if they notice the effort we've made. And that's what we want! Readers~
All in all, good luck! It's not a bad concept! Once you get the literary stuff ironed out, I'm pretty sure you'll have a comfortably large readership.
Ganbatte~~