Google Drive maybe? I don't know if it's free, same for Mega.nz
I think it's free but limited amount per [time period] for both of them in terms of downloads based on people using them for sharing mods and the like.
I have seen some games here on itch with over 5 GB so there's apparently some way to do it.
Viewing post in Hazbin Hotel & Helluva Boss Hentai Clicker comments
Google drive and Mega download limits are really low. I used it before, but I think it's like less than 100 people a day, and that's per account not even per file. And the larger games on itch, to my understanding, are more of the admins allowing individual cases if they deem it worthy of that. But thanks for the suggestions anyway.