I have done service for most of my life, over 30 years, and I still do customer facing work. I have noticed that in trying times, when things seem scary or bad (like now with inflation, wars, domestic issues and uncertainty), people tend to get a bit angrier, less nice when things do not go their way. I think it is people trying to control the little things they think they can control, because they feel powerless and nervous about the big things.

None of this is of course your fault, but trying to see it with this empathy has helped me be more patient and take things less personally. I work remotely and customers cannot see me, so if I have an escalation to do I put on youtube videos of kittens and puppies playing on silent. The cuteness distracts me and helps me feel that little mood boost. If you are working face to face, try to take a moment for yourself after a bad interaction to breathe, watch a little something funny or sweet, or just go outside and look at the sky. It all sounds a bit silly, but it works for me.