I really need opinions, I have no one to talk to irl?

I have this draining friend.. Whenever I call her out, she never admits anything. I hate lying so much, and sometimes I don’t even confront her, she’ll come to me with the most ridiculous things, expecting me to believe them. She’s always “testing” me (disappearing even though I know she’s on her phone), not opening the TikToks or memes I send “because she’s not active,” but at the same time she’s reposting regularly.
She expresses her feelings openly, which always makes me look like the bad guy. But when I’m hurt, I usually stay quiet — because even if I say something, she won’t admit it. She often says one thing but does the complete opposite, and that’s a huge red flag for me, i know i’m sensitive and i notice everything and that’s why I’m struggling lol.
she can be happy and fine with her other friends, so it’s not like I’m shaming her personality. Sometimes I even wonder if maybe I’m the problem, maybe she doesn’t even want to be friends with me but most of the time she’s the one planning our hangouts. We’ve had many arguments, and I’ve even told her before: if she feels that bad around me, we can stop being friends (no drama, no beef). But she never agrees.
Now I don’t know what to do. Should I talk to her again (even though we’ve talked so many times and she still doesn’t understand)? Should I just keep playing dumb and joking around like nothing’s wrong?
I know she’s struggling mentally but she can be fine with the other group, and i also struggle with depression and i try so hard to not let it affect anyone.
I feel like friendship shouldn’t be this hard! I honestly feel like she’s my boyfriend, not my friend.
I really need opinions, I have no one to talk to irl?
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