I'm cocksure your strategy is that you buy from presale. I had to dissect your posts into two so as to get a better perspective which the bolded also brought to the fore. For you, those bought tokens will rise once they're listed because they're sold way below listing price to presale investors. A lot of projects go that way, they utilize direct purchase or launchpads too in doing that. On the contrary, those who buy tokens when they're listed will dispute with you that prices go up once tokens are listed. Reason being that upon listing early investors will dump by taking profit, and that will cause price to dip. It's the normal expectation, and it hasn't failed. My strategy is always never to rush in to buy a token immediately it's listed. Wait some time for it to dip before buying in. It surely will dip below listing price. It's just a matter of time.