Will everything save

I just recently dropped my phone and it cracked. I can't do anything about it. I tried to back it up through my phone but it's saying I need wifi, but when I put wifi it says the same thing. I went to iCloud to check if I still had my notes and files and some are still there. But I haven't backed up my phone yet. So I'm confused about how it's there. My most recent backup was in 2019, but it was with an iPhone 6. I have the 8. So my question is if you go to iCloud on your pc and you see that everything is there, does it mean that it backed up?