To successfully download larger files from MEGA, all you need is to create a free account, install their desktop app, then use that to download files (A small dropdown arrow next to [Download] on the MEGA page, then choose to [Download with desktop app], or copy the URL, open the desktop app, click the three dots/[Show options], choose [Open links], paste URL). It won't increase the transfer limit, but the desktop app is a download manager, meaning that as soon as your waiting period is over, it resumes and finishes the download without any further interaction from the user
In my experience, MEGA (desktop app) is the most reliable filesharing service, never losing any files, or causing me to ever restart a file download from the beginning, unlike all the other filesharing services I have tested.