why most of the peoples are not investing in meme coins??
Because it is not worth investing for, it's a meme coin what would you expect on that project in the future? just to make it fun for everyone? people invest on something because they see its potential and projects with potential will attract investors and users which in the future will increase demand and thus increase the price.
Investing to meme coin won't do anything to you, you can buy it just for short term and should not be considered as long term investment.