I can imagine how hard that must be having to go into a toxic environment for hours at a time every day. It's great you already have a regular meditation practice in place, I'm sure that's helping a ton! But maybe you could start some kind of ritual for your drive home from work, to help you get back into a calmer, more peaceful state more quickly. Like incorporating podcasts, or audio meditations, or inspiring messages, like Abraham-Hicks, or Tony Robbins, and listen to them on your drive home. Maybe that would help you to destress more quickly, and give you something to look forward to about the commute home. Or Yoga Nidra is a great thing to listen to around bedtime to help with unwinding. Just an idea though!
Thanks reading and commenting, and good luck with coming up with some rituals that help serve you even more!