1. We buy coins not only because the price is low - many had thought that buying them in bulk gives them a good profit later.
You must buy coins either to speculate (if you are a trader) or for future value, and 99% of cryptocurrencies fail to maintain a future upward value.
2. We have to stop thinking about hypes - maybe some but not all of the new projects
Even good projects do not continue to grow for long, because it is mostly in response to conditions. For example, the reason for the rise of Polygon is the increase in the fees of Ethereum network. As soon as the fees decrease, BSC and Matic will not be that useful.
3. Stop falling to scam projects - usually, people got tricked when seeing projects offer high rewards (good to be true) and most of them are just a lie.
Any project that promotes itself in terms of quick profit is scam, whether it has been proven to be scam or not.
4. Doing Research - we have to take this seriously as nobody had ever succeeded without this.
Searching alone is not enough, but you know how to search, many scam projects buy ads, reviews and good articles, so do not be deceived by the first page on Google.