They told me I should smile more. After deciding I wasn't good enough to work there, and beginning what was a painfully obvious paper trail of "warnings", etc. so they would be able to fire me, one of my supervisors told me I "seemed sad" on group zooms and didn't smile enough. That's when I knew that no matter what I did, they were going to get rid of me. They talk a lot of big game about being a small company, being like a family, working together, etc. At first, I believed them and felt happy to be at a company with that culture. But if they decide they don't like you, get out as fast as you can. There is no support from management for improvement or growth opportunities. They simply say, "Do better" and don't provide any guidance as to how. They will send you long emails that list everything they think you're doing wrong and say, "We're here to help" but then will talk over you when you try to discuss anything with them. They'll tell you to work faster or be more proactive but send you messages admonishing you for not working fast enough before you have the opportunity to do ANYTHING. If you try to show them examples of how you've improved, they'll say, "That's not enough," even if the list is five pages long. Don't try to succeed here. All you'll do is begin to doubt your own skills and talents.
