You can learn from experience, because that's where you get something valuable. Following the trend is great, but it should be noted that you have to learn about something you want to invest in. Strong technicals and fundamentals will make a project that you invest in will end successfully.
That's right, the advice you give is very good and good for everyone, because experience is the best teacher for everyone, both in crypto and in the real world, so reflecting on experience is a very necessary thing to do so that we can avoid it a little loss.