Ok got it thanks but many people are investing in shitcoin/memecoin is that the correct descision ?
I wouldn't say it isn't a correct decision if they get a huge profit from it. Probably these people are into short-term investments where they can get higher profit from these kinds of altcoin. This kind of investment is very risky but if you timed it right, You can get 1000x+ profit in a very short timer or you end up bag holding worthless token if you messed up on the timing.
And can we invest in the coin that has low marketcap?
This might give you an answer.
Small-cap companies are typically those with a market value of $300 million to $2 billion. Generally, these are young companies that serve niche markets or emerging industries. Small caps are considered the most aggressive and risky of the 3 categories. The relatively limited resources of small companies can potentially make them more susceptible to a business or economic downturn. They may also be vulnerable to the intense competition and uncertainties characteristic of untried, burgeoning markets. On the other hand, small-cap stocks may offer significant growth potential to long-term investors who can tolerate volatile stock price swings in the short term.
This is one of the reasons why I stated that it is good to invest in a project that has a solid foundation and good community so even if they are a low market cap, there is a better possibility that it will grow due to the community support and solid foundation.
Or what is the main and most priority that we should focus before buying a coin ? I mean the most priority we should focus ? Any idea please regarding this. Please
I think you should focus on your goal. From that, you can evaluate how much money you wanted to invest, what altcoin you will buy, and the length of holding until you sell your coins.
For example, if you are aiming for a 1 million dollar profit in 5 years but you are only investing $1000 then I think you won't get your planned result if you invest them on ETH or BTC since I don't think you can get 100000% return just by holding them in 5 years.