It depends what you are looking for. NES Roms? You can use Internet Archive and a download manager. Some romance playlist you made on Spotify and now want to burn on a CD? You can use a converter that will fetch MP3 files from YouTube.
The megathread is the place to look.
You may want to look into Usenet. There is a price involved but it's not significantly more than a VPN.
To store stuff I use large hard drives. Most of my data is on one other device so those drives act as a back up in a way. It's unlikely both devices fail at the same time