Is this a toxic friendship?

I’m starting to get strange vibes from one of my friends and I’m starting to wonder if she is a genuine friend

1. We both work the same job, and when I first started the job she sent a passive aggressive email round all my colleagues saying that she had to correct me because I got it wrong

2. She never likes, comments on or supports my posts on social media, even though she is always online and viewing all my stories. She always likes and supports the other friend’s photos. Sometimes she will make a sarcastic comment about my photos and posts saying I’m always going on nights out and that she could never do that

4. After I joined a gym, she joined the same gym as me, and since we’ve been working out together she always messages me how much exercise she’s done and cardio and how great she feels. I get daily updates about how well she’s doing with her fitness

5. I’ve noticed her more than once looking me up and down in a judgmental way when we workout together, particularly focusing on my legs and stomach

6. She keeps making sarcastic jabs about how I’m addicted to the gym and that it’s practically where I live, even though she goes just as often as me and always boasts about it to me after

7. I live in quite an expensive area, and she keeps making angry comments to me out of the blue like “not all of us can afford to live where you live can we”

I just get a general sense of tension and awkwardness when I’m in her company, like I sense a kind of anger there at times

Is this a toxic friend?
Is this a toxic friendship?
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