Why?

Sounds like you want a DAM (Digital Asset Management)

Maybe have a look at https://www.resourcespace.com/

I haven’t tested it, I just fetched it from awesome-selfhosted.net/

What would be a better alternative in your opinion?

Firefly has integration for gocardless/nordigen which is quite usable in europe

Ah, maybe. My vocabulary for kitchen furniture is a bit unclear sometimes what equates to what.

Schrank would be a box with doors and several levels of storage inside.

Du hast doch nicht alle Tassen im Schrank - German, you don’t have all your cups in the drawer.

Telling someone he is stupid via comparison to cups. Why? Who knows.