Dating advice needed for crazy situations

TL ;DR: I’ve met several women, but I’d like to conquer their heart and know more about them. However, the woman with who I feel a lot of chemistry is married.

I am a 34yo lesbian. My long-term ex dumped me after I had a clinical diagnosis.
Meanwhile a lot of things happened in my life and I’ve had a couple dates. The issue is that the kind of woman I feel attracted to are difficult cases:
– Case 1 – I had a date with a married woman and we’re going on a 2nd date soon. She says she’s unhappy in her marriage with a man and doesn’t love her husband, but has no courage to change the situation. We sexted a lot and have chemistry…and she told me she felt in love for me, but it seems too soon for that, I guess. We’re always texting each other along the day, but I can’t know if she really feels something for me. However, as I said…she’s married and I have to protect my feelings, but I feel something. How can I understand more about her intentions?
– Case 2 – I’m going to have a date with a woman who has similar interests. We matched on a date website and she’s pretty, but I don’t know which is her vibe.
– Case 3 – I found a sexy tattoo artist on a dating app and have her instagram page. I’d like to know more about her, but I don’t know how to start an appealing conversation.
– Case 4 – I also found a doctor on a dating app, but she had been an instructor of mine. She seems interesting, but I don’t know if it’s possible to go from a formal position to a flirt/date.
– Case 5 – I met other married woman on the dating app, but with this one I feel she’s really only into a casual thing. We’re always teasing each other, but I don’t know if she’s interested on a date.

Oh, and what about I want? At this point I’m available for friendships, casual things or a serious relationship. I’m going with the flow, but I’d like to have a romantic thing. I miss that a bit.

Give me some advice on these women, please.