Doesn't need long complicated answers - just a simple question:
Do you invest
1. mainly on price/the market trends
2. mainly on the underlying usefulness of the token/NFT
3. pretty even split of the two.

That’s a good strategy. But yes guess what? Everyone has their own techniques and methods.
For me i choose the coins that are trending in the twitter and buy them when necessary.
Also while choosing the coins i go for tokens promoted by big companies and people.
I know this strategy is followed by many and yes this only works everytime.
Hope this helps you OP.