If you're not giving such advice professionally, my advice is to not give it at all - because why would you convince someone that option A is better than option B or C? What can happen to you (and probably will) is that some of the altcoins you claim are scams will have a maga pump at some point and then your friends will tell you that you financially damaged them with your advice.

People invest in alts because they want a much higher profit than they can expect from investing in BTC, because today who is satisfied with x2 or x3 when they know there is a possibility to get x50, x100 or x1000?