You can't make constant profits from meme coins, not only in meme coins, you can't make constant profits with anything in a market that is extremely volatile and unpredictable like the cryptocurrency market. Bitcoin is the most trusted and reputable cryptocurrency in the market, but even if you invest money in Bitcoin, you can't expect to earn constant profits because there will always be ups and downs in the market.
There is no crypto coin that can guarantee for constant profits. Even Bitcoin, there is a chance to get a lose if the market trend changes suddenly. Sometimes bad news can bring big impacts suddenly, including to change the price drastically. No matter how great our trading skills are, there are times when we cannot avoid losses. Moreover if we are trading meme coins which rely on the news for much, the prices easily drop or increase in a short time. The nature of meme coins makes it sometimes difficult for us to anticipate very rapid price changes.
In meme coins, you can't know which one will succeed and which one will not, doing some research might reduce the risk but there will still be risks involved.
So, does it mean we rely on the luck?
I think it applies to crypto coins generally. We don't know which one will succeed, but those who trade in a proper way must have a bigger chance to be successful. Knowledge and experience have a big role in this matter, people only can do it properly if they have enough knowledge and experience.