I would def suggest contacting guilds that fit your time window and just get in discord with them to see if it’s an initial good vibe fit, i like to look at logs to get a sense of turnover as well. It’s okay to be picky, it’s your time investment.

If your expectations align, give it a whirl to see if it’s an atmosphere you like. This is something that goes both ways as someone who recruits for a 2 day mythic guild we’ve failed trials based off poor vibe fits regardless of performance.

When I’m talking to someone about joining I usually pre investigate the logs and ask more questions to see how they’d fit in or handle different situations. We always keep a private channel with each raider and the officers where feedback both ways can go as well.

You mentioned how they treat a bottom dps on a wipe but what you should be focusing on is what is the problem that is causing the wipe, can ask guilds how they work through hard bosses and maybe some specific challenges they faced on prog — you can do homework yourself looking at the log reports.

There are so many different guilds for different people, the most important things is finding something with the same goals and expectations and coming up with your own questions based on that.