I second Richard's advice.
I like my iPad for browsing the photos and when I want to show my photos to other people - it is easier to pass around than a Mac. But when I want to work with my photos I need my MacBook Air or MacBook Pro.
Like Richard I need the ability to add keywords and Smart Albums. And on a Mac it is such easier to keep the alums organized in folders. And on a Mac it is much easier to have more than one library to archive the photos that I do not need on all devices.
And frankly, I could not find any feasible way to make a backup of my Photos Library, when I do not have a Mac as well and are limited to iOS devices. On a Mac I can make backups with Time Machine, or make copies of the Photos Library. The iCloud backup of an iPad or iPhone does not even include the photos and videos, if we are using iCloud Photos. And anyway, the iCloud backup does not offer a long history, like Time Machine does. There is no way to recover accidentally deleted items from an iCloud backup of the iPad, once they are gone from Recently Deleted.
When I needed to replace my MacBook Pro 2015, I got myself a MacBook Air with M2 chip, 24GB RAM, and 2TB storage.
It is very slim, easy to carry around, very fast, has a brilliant display. The only thing I am really missing are more USB ports. I had to get myself a docking station to be able to connect more than on external drive or import images from a memory card.