The Internal Memory on my iPhone 11 is full and cannot seem to move enough content elsewhere to help free up space.. I need help, please!..

The internal memory on my iPhone 11 is full and I am having trouble freeing up space on my phone as I do not want to lose anything currently saved in the phone’s internal storage, so I was wondering if there was a way to save everything (photos, documents, texts, etc..) onto another platform or other cloud like Google drive, iCloud, OneDrive, Dropbox or even to an external hard drive, or anywhere else so that way I do not lose some or all of the things I delete from the phone’s internal memory..??

Any help would be greatly appreciated!!

Thank you in advance!!

p.s. I have plenty of space available in my iCloud as I pay monthly for the 2TB plan.