Some of the things I look at is the opponents themselves, their age, gender, where are they from, how are their chips stacked, how many chips do each opponent have, are they doing chip tricks, are they paying attention, are they talkative, are they talking
poker strategy, is what they are saying making sense as far as poker theory goes, how are they dressed, do they have a backpack, are they drinking, are they drunk, do they smell like pot, how is their mood, are they tilted from a prior hand, yeah that’s about what I’m looking at and paying attention towards. Good luck!