I miss back in the day. Used to be able to store all my stuff on CD-R's, hell before that it was floppy's. File sizes have grown exponentially, programs/apps all have huge sizes. Pictures and videos is my biggest issue, but I'd also like to backup games that I've downloaded so I don't have to download again. I can backup old games no problem, but modern games? Many are 100+ GB now, and in time they all will be and 200GB will be the standard, then a terabyte and more.
Anyway, until I can afford and find a 20 tb sad I'm just using DVDs for everything but games and large programs. Quick to write, solid, tangeable etc. If I could afford a bunch of flash drives I'd probably do that instead.
If you can afford it and it's important data I'd ofc recommend backing up to a large SSD, THEN to a cloud (or more) as a failsafe.. then also using flash drives/DVD's etc. For an additional failsafe for the super important stuff.
I mean, if it's important backup all you can.
I've got priceless memories in my Google photos library but ofc Google removed being able to view them on my native photos app and download easily.. so instead I either have to backup and save ALL of it in Google drive or download specific albums.. idk so I wouldn't personally recommend google as a true backup as you never know, personally I'd just use DVDs and flash drives for that stuff