Negativity normalized?

Just started serving a couple weeks ago and I love it because I enjoy connecting with people but my coworkers never stop complaining. Literally we’ll have like 10+ servers for the weekend and every single one complains about getting sat or they argue with the cook or they don’t like table 5 or this customer is being some type of way or they’re mad because of whatever reason. I definitely understand hating the job and getting overwhelmed, eventually everyone hits burnout in this industry. It’s just an EVERY.DAY. thing and it gets excessive I feel like I’m suffocating in bad energy. Is this normal? Any tips on how to ignore it?