What are the big problems in cryptocurrency today? What problems need to be solved? Please advise me.
From my perspective, altcoins have many problems, the biggest of which is that projects are created without any specific reason except scams, so the success of the project is not guaranteed, and scammers constantly set new traps by launching new altcoins. New investors invest in them after seeing the hype in the core, and at some point the project scam scares off new investors. Most altcoins in the market will disappear at some point. So it is wisest to invest in it with money that you don't mind losing.
That's the major problems in the altcoin section we have nowadays, they are all here to make profits and not utility, there are many altcoins who had made huge amount of money off naive investors who doesn't know how this thing works, that's the problem crypto has at the moment.
Altcoin are launched everyday, new ones coming into the space everyday with the solution of faster transaction speed, less fee and all of this and that but can't survive after one time ATH.
Immediately they get their ATH, they keep dropping and disappear gradually without rising up. That's the problem.