It can also be done here at geckoterminal https://www.geckoterminal.com/solana/pools instead of looking on twitter you usually only see scams and then there is no exchange where it is listed, instead you just see will raise funds and be expanded by the community, unlike these, there is a community and an exchange place for trading activity.
It's better to find or look for a venue where exchange is already exist, even you failed to pick the right coin but the chance that you can sell them with some amount is possible, unlike with meme projects that don't have any existing exchange, you are risking everything as if the project don't reach the exchange meaning that the money you invested will be fly away with the scammers who manage to trick you in buying what they so-called meme assets.
Finding the next meme depends from how you put your radat with those pump groups who knows well on how to play with investors and traders emotions, they are likely pump the coin and wait for those who will follow them and keep pushing the hype before eventually dumped it all at once.