stremio/nuvio + torbox since yall keep mentioning not storing anything longterm and deleting as you go

Hence my solution. You can get 2-4 TB drives for around $30 on ebay. Get a flexible RAID controller that can handle multi-parity Raid 50, ideally a second hand raid card. We're at a total of $230 in at this point, assuming you have a windows 10 desktop lying around.

This is not a high data speed situation. If you have 6 or more drives you can dedicate two to parity and now you will never have data loss despite buying second hand drives. Effective storage capacity will be 16TB, which is more than enough to store 100 full series and a few thousand movies at 1080p or lower, and raid 50 gives a speed boost above what your controller will likely be able to handle, and way above what is needed for even a quite large multi-user media server.

Data storage is still incredibly cheap. You're just confusing your needs and your wants.