Other type log files keep growing

If Other data in Settings, General, iPhone storage is more than a few GB then you will have to restore the phone

Emptying Recently Deleted will clear photo space and can be done in the above settings.

Backup and restore (I recommend the computer method if you have one)

(1)How to back up your iPhone, iPad, and iPod touch – Apple Support

Unlock your SIM PIN if it has one

(2) Restore your iPhone, iPad, or iPod to factory settings – Apple Support

(3) Restore your iPhone, iPad, or iPod touch from a backup

I too would be worried about any process where the phone is close to 100% full. It would help if you could manually export or otherwise safeguard important stuff in case of bricking the phone (a real possibility)

I steer clear of iCloud for photos or backups due to limited internet data plan so I am no expert.