Can you tell me; in a ttrpg what would you suggest are the makings of a great player? What are the people you have played with and wish more people had qualities like that, when it comes to the game? I want to make a little declaration to pin in the game store for the dnd players
One of the best people I ever played with was a guy who was always looking for opportunities to roleplay with the other players at the table. Players often default to interacting with the DM, but the game is way more interesting for me when the players interact as a party rather than a collection of solo players.
I was going to say something along these lines: D&D (and most tabletop) is a collaborative experience, and it works best when your whole group is working together. In combat, in exploration, in roleplay, you'll get a lot more done if you're trying to support each other. This can also include building your character to help fill gaps in your party's composition. Almost always, winning is contingent on everyone doing their part; refusing to do so will at best add unwanted tension, and at worst throw your entire party into chaos and possibly death.
I discussed this story before, but it bears repeating because it illustrates the point. One of the players in my group began openly coveting an artifact ring that an NPC we met was wearing, for no real reason other than it looked powerful and his character wanted a powerful thing. This NPC did nothing to harm our party and was actively helping, yet he was still scheming to take it from him somehow, all the while doing barely anything in fights. Finally he enacts his master plan involving Suggestion to just make him hand it over, which led to a bunch of arguing over the rules and a lot of "wtf are you doing" from everyone else. Eventually the DM resolved this in a way that didn't involve giving him the ring, but we lost two powerful NPCs that would have been great for backup, and we kicked the character out of the party for being retarded and had the player roll a new one. By acting like an asshole, he made the game harder for the rest of us.
When I confronted the player about this after the fact and how he should have been focused on helping the team (we had just come off a hectic battle where all he did was fly away and throw a couple cantrips when he could have teamed up with me and locked down a big chunk of the field on the first turn), he replied that he didn't have to and he could play his character how he wanted, even if it was being a selfish prick. Which, fair, he could, but doing so made the game objectively worse for everyone else. If your plan is for your character to be an ass, make sure everyone else knows about it first. Or better yet, don't do that, because why would your party tolerate having you around (examples like
@AnOminous's story notwithstanding, and even then it didn't end well for him)?
If I were to shorten all this to a simple rule, it'd be something like: "D&D is a group effort. Act like it."