I have a "hackish but works for me" meme database: I use my Telegram "self chat" to send memes I like to myself, and I tag them with the kind of words I'm likely to search for when looking for them later.
Works great for me.
It's kind of like trying to come up with a good Google search phrase, based on how other people must have phrased something, but relying on knowledge of how you phrase things instead.
I do this for some, but most of the time my use case is to look for something very obscure from a long time ago that I didn't regard as interesting when I first saw it (so didn't make the effort to manually categorize it).
Works great for me.
It's kind of like trying to come up with a good Google search phrase, based on how other people must have phrased something, but relying on knowledge of how you phrase things instead.