No matter the research that you do altcoins remains shitcoins because their price value depreciates drastically and only pump very little. An old coin isn't a guarantee that the coin will be profitable in the long term. Take example of Etherum, the prucw has been annoying compared go what it was initially. Etherum can't pump higher than its previous ATH.
Unfortunately, it is difficult to distinguish which altcoins will become shit coins and which ones will not, if it is done before listing and even more recently pre-sale, unless it is done by a top exchange or a top public igure, that alone does not guarantee it.
If it is a matter of whitepaper and also concept, hmm, it does not guarantee it either, because even if we think the analysis is quite good with a good concept, but the name of the Whitepaper can be made as good as possible, but the reality is very far. This means, if you want to invest in new coins, it is better to do it little by little and not all-in because the risk is very high