Imgur mostly, since reddit died.

From everywhere and nowhere.

I’ve found good source images on the community tab of history documentary channels on YouTube, like this one

Sources mentioned here, along with B3ta.

B3ta is a message board focusing on British humour and memes. It’s not everyone’s cup of tea, understandably.

I make shitty memes in response to other people’s memes. Like this:

From my safe space discord servers mostly. And from Lemmy.

Instagram, Reddit and sometime Whatsapp

I make mine.

Basically all from either tumblr or a single small discord server

hexbear

and sometimes I make my own:

From MGS2

I make them

Same problem, OP. I used to get em from reddit, now almost exclusively Lemmy.