You could try with fewer files maybe. You don’t have to upload them all at once.
very silly question but… how? I’ve tried to upload the build files to a server I have
Depends on your app or framework e.g. React. Each hosting provider will have instructions on how to deploy. Netlify and Vercel both have deployment available through CLI if that’s what you prefer. You should be able to use OVH too. It would be easier and more suitable than trying to upload to Moralis.