I know many use automated LP managers. You need to do research or maybe use tools for tracking scart contracts. Tool like this https://www.arkhamintelligence.com/ but you can use other similar tools if you do more research. Personally I do not know anything about the project you mention as probably is scam or perpetual rug.

If you try to provide liquidity yourself, the usual way for this is to go on the Dex website in their pools find the pair or choose a pair and provide liquidity.