I will first tell you this: you did not create this toxic environment. You do NOT deserve to be in such a negative environment. You deserve to work somewhere incredible where you are surrounded by positive, kind individuals and where you absolutely love what you do.
Once you've accepted that you are indeed in a toxic environment, that's half the battle right there. The internal liberation you will feel by giving yourself permission to acknowledge the truth is huge. And that liberation is the critical boost (large kick in the butt) you'll need in order to plan and take your next steps, in the midst of that toxic environment.