Am I missing something about my smartphone's storage?.... [View all]

Ok... I have storage "problems". 😄

Right now Google is telling me I have like 3/4 of a gig left. 99% full.
Yeah. I've got thousands of screengrabs which I'm continuing to delete!

Disabled some apps, archived a few, as well. Keep emptying my temporary cache. Get ridding of G Mail stuff bc I forget to!

But I didn't add any new apps
So how did I get to 99% when about 3 - 4 weeks ago I was at 92%?! Wth?!

Suggestions please.
I need my YT, 1 art making app, Duck Duck Go (DU), 2 free streaming services (one archived) , Paramount (which I will get rid of once I finish ST Academy), Tune In radio.
I only have 2 games left (gotten rid all others for more memory through 5 months) now? Both archived. And just got rid of one other game tonight.
I suppose I could get rid of Pinterest but I love looking at art, crafts. My specialties, and loves.
Bah. I don't want to pay Google monthly for more storage.

Oh, wait I just remembered something- Duh - will an SD card help?
Never got one for this phone. My previous smartphone - my SD card got screwed up (didn't do anything wrong) and I lost alot of stuff!
Maybe - unconsciously I'm using all these screengrabs VS SD card storage bc of my bad experience! 🤔
TIA!