I have observe something in this forum, a lot of people that are not trading or have traded before and had great losses which made them run away from trading are still saying trading is a good means of making profit from bitcoin
They trade Bitcoin on the market and get profit or loss from the market, from other market traders because a trading market is zero-sum game. You as a trader can get money from or lose money to other traders. Money does not appear in the market from the air, it only moves from you to others.
What do you mean by investing in top projects? ICOs? buying alts and holding? NFTs?
Investing in or holding cryptocurrencies from top cryptocurrency projects are not safe, not completely safe. There is risk that top altcoin projects can fail, die or scam exit, and sometimes even their founders, core team members don't think their projects will fail. As outsider investors, we have more uncertainty about future of altcoin projects.
Don't buy altcoins because they are top altcoins