So, apparently microsoft runs a developer program that is free to sign up for and unlimited and renewable for free as long as you do developer-y things like pushing changes in github every 90 days.
(shows 5tb, but dynamically allocates more as you store more stuff [assumption])
I've been using it for about 6 months now and have had no issues! super useful if you like to hoard data like me.
You also get free email hosting if you have a custom domain and access to a bunch of free apps, and it's PER USER!! You can literally have 15 users, each with 15 TB of storage, its kinda overpowered
here's the link: Microsoft 365 Developer Program
let me know if you try this out, this has been one of my favorite tech tips i've discovered this past year