I've a S21, have little problem uploading, only thing I find is, I quite often have to reduce the size.
I've always used android, various ones, prior to the one I've got now I had a pixel, nice but only lasted two years and to pay to change the battery wasn't worth it, also the screen gradually popped out, I assume where the battery was overheating. My most recent phone was a honor lite, cheap as chips and already out lived the life span of the pixel.
Get a photo resizer. This ones good, can do loads at once https://play.google.com/store/apps/details?id=com.simplemobilephotoresizer
I had a Galaxy 2 at one time, decent phones they were, just got a bit outdated, as mobiles had moved on since that dinosaur.
Current phone is a Huawei, it's been a great phone and it's nearly 3 years old now. I use Google for everything and Huawei are moving away from it so makes sense to get a Google phone. The new ones look really good.
On your Huawei did you ever accidently active the voice commands, done my nut in that. I had to youtube to find out how to turn the bloody thing off.
Click on the photo, then click on the pencil icon that appears at the bottom of the screen, then the next lot of icons, click on the 3 dots at the bottom right hand side, then you will see resize click on that .
