I pretty much just keep to myself in the gym. I train alone 99% of the time. I have never had my phone with me when training. Every few months I may get updated pics done so I bring it in my bag and get them taken post workout. I don't listen to music in the gym as I have issues with tinnitus so I just listen to whatever they have playing. My current gym plays great music that helps get me going. I put all my weights away. I am nice but the only time I chat is if a mate is there but not much at all. I suppose I can look unapproachable at times (never a bad thing in the gym) because I wear hoodies and I train hard and I am usually amped up on preworkout
Although if anyone approaches me I am always nice and definitely not one of those guys who thinks they are so hardcore no one should talk to them in the gym
You tend to get the same type of people in most gyms. Usually at least 1 weird old man who spends more time in the locker room than the gym itself and his naked 90% of the time. The groups of idiots taking 1 machine and using it as a social gathering. People who don't have a clue and will lift a tiny weight about 100 times whilst looking at their phone or even better reading a book. Countless people on their phones for 5 mins in between their half arsed sets. The fat bloke who thinks he is huge hardcore who will shout on every rep and just be annoyingly loud the entire time he is there. The 160 pound IG physique guy who will constantly look at himself in the mirror and pose (lift his top up) between every single set. The IG girls taking pics tilted to the side so their waist looks small and their arse looks curvy and if it doesn't they will just photoshop the pics anyway to make sure it does. The most common just the people with no intensity who will sit there doing set after set of light weight and never training hard and spending 20+ mins doing countless sets even on the most basic machines.