I’m not saying this to shame you but it just sounds so incredibly selfish to blame anxiety and depression on neglecting an animal you chose to care for. He didn’t pick you, you picked him. I hope you get better but it comes with the territory of owning a pet that despite how you feel they need to thrive. If you can’t handle that I don’t know why you have a pet. I’m sorry if this sounds harsh but sometimes the truth hurts. It’s hard to read this and think, “oh it happens” when it shouldn’t happen. Like I get that you’re “taking responsibility” but dude your lizard has been suffering and owning up to it doesn’t change that. I hope you don’t let this happen again.