Samsung phone users please help!

[Iphone2Samsung]

I'm in the process of switching iPhone to Android. I have 22000 pictures and videos combined (I have 2 kids lol and these are from over 5+ years)

I had 1TB icloud storage i paid monthly for, does samsung offer thisn/ a cloud storage for images??

Going to back up manually onto a computer / USB too but would like them on my phone too !

I just use Microsoft OneDrive, 1tb is included in my Office subscription. Photos and other files automatically back up from my phone. I've never bothered with Samsung services.
The other alternative is just to use Google.

I use the Google 1TB storage, which I pay for annually.

When I looked smasung cloud ties into Microsoft one drive so I think that's best bet! Does anyone know does this backup to gallery?

Or should I just backup my 22000 on the drive then select my most important (birth and birthday pictures) to keep in the gallery

I'm not if this helps, but Amazon Prime members get unlimited photo storage.