Downloading large files on apple devices

I’ve been having trouble all week trying to download large files (10 gb 20gb ppt or zip) in different browsers i.e: safari, chrome, brave and for some reason it never completes the download! it either stops at some point or when I try to re start it, it doen’t work!

I’ve tried this in my ipad, iphone, macbook pro, imac pro and it just never works! And i know it’s not the internet because I’ve tried with the corporate wifi, my house’s network and my own cellular data… and it’s not the files either…

PLEASE help me fix this! I need to download large files for work and this is making it impossible!