I mean you wanted feedback and people are giving it to you, complaining about it isn't going to encourage people. Things I noticed:
Even when you pointed out the book was supposed to be an I I still had a hard time seeing it.
Also combination of the slideshow and arrow buttons for the pictures felt a little weird to me. I wasn't sure that the arrows did anything the first couple times I used them because the pictures were scrolling at the same rate. Maybe just pick one or the other?
Also the arrow buttons aren't aligned in Chrome which was a little jarring - I see you have a margin on one but not the other, maybe it'd look better with a bottom margin on the left arrow?
I think the font / character images are nice but the layout kinda reminds me of a 90s geocity site lol. It's fine but doesn't look super modern, probably because you don't use the full width of the page like most more modern pages do. Look at some examples for some more modern games like the sites for Stardew Valley and Wargroove - see how these sites use the full width and break up into sections? I think that would help your site look more professional. You could maybe have your background on top, transition into the ItsyRealm logo over it, go into a slideshow, then give your blurb and github link at the bottom.
edit: posted this before the second logo but I still have a hard time reading the I tbh