If the investment is only about coins that already have potential and quality in the market, then there is no need to do a lot of research because it is clearly good and good for the future as long as investors are still very patient with the current market situation.
But when it comes to new coins or meme tokens, it's clear that you need to do in-depth or repeated research on them.
Except for bitcoin and ethereum, when investing in any altcoin I think we should do thorough research before investing. There is no guarantee that the top coins on CMC will not crash and be forgotten. Although currently they are considered to be worth the investment like Sol, Avax, near ... are all very good and potential at the moment but are you sure they will continue to grow as the bear market lasts.
There is no guarantee for investors to be able to profit if they do not do research first on the coins they want to invest in before entering the market because basically we certainly realize that the crypto market is very volatile so it is very, very necessary for us to always do research so that we are not wrong when we want to open buy/sell positions with the coins we want to invest.