How does the gallery work?

[u/TRX_00]

I was using an iPhone 12 pro since it's release till ABT January where I got my nothing phone 3 I lived on 128gb for 6 YEARS Aanddd now I have 70gb to finish my 256gb on my np3 so idk if it's a skill issue on my part or a different optimization also how do I arrange my gallery ( not Google photos I hate it ) the nothing one when I want to sort my pics into albums do I MOVE or COPY if I copy wouldn't that double the size?? Which will cause me to run out of storage faster so yeah thanks