Seems OP is not from an American English first nation. The project seems really cool and seems to be about friends and the responses in this thread seem upbeat.

Maybe we can help by providing guidance to cater to us better.

I'll take a stab.

Cultures is a weird word. I'd use the singular.

The landing page is rather short.

There is a gallery but it doesn't slide.

The play store description also has some grammatical differences but maybe that's helping you rank, who knows.

OP, look into Chatgpt3 you can paste your literature to it and it can make it grammaticaly correct.