The approach where you are just curious about her. What she is like. That's all.

So Why do women act so reluctant when you do that ? lol

What part of the world do you live in? I need to move there. Here in Alaska if you approach a women saying something very general its considered taboo. Everybody around will look at you. I am attractive, and the tall dark and handsome category fits me very easily. Colored eyes long eye eyelashes. So Its not about looks at all.

What do you think could be the issue

You know that this seems like an excuse. No matter where you live, a guy approaching a girl will make people look. The normal, everyday guy doesn't approach women that they don't know.

Give some details. The only thing that is obvious at this point is that you approach from the front and make eye contact while being self conscious about people who may be watching.

Im just speaking in general if you read my OP a bit more closely lol. I approach in all cases and many times the woman is just reluctant unless She knows you through other friends.

I never implied that you didn't approach. You said that women are reluctant when you express curiosity about them and it's taboo to approach where you live. Do you actually have an issue or are you just passing the time by asking general questions?

For example I approach a girl at hot yoga after a workout and say hey good job, but after a short "thanks" there is no opening for a conversation. because she just walks away into her locker room lol.

This is what I was asking for...more detail.

Your opener is lazy and it only allows for a "thanks" unless you follow up. Why not ask how long she's been doing hot yoga or how often she works out? You don't introduce yourself and don't ask what her name is. When you approach, it is your responsibility to get her to talk and not look or openings.

Im just speaking in general if you read my OP a bit more closely lol. I approach in all cases and many times the woman is just reluctant unless She knows you through other friends.

If you're finding women are standoffish a lot :

Either

You're not as good looking as you think
You're creepy as fuck but are good looking

women are shy. women are cautious when approached by a random guy at a random place. unless she is a ts, you're going to get some resistance.
did you expect her to say "let me give you a blow job in the locker room" as soon as you said "nice job"?
you need to lead her where you want. unless she is a ts, she is not going to lead.
and it's a numbers game. 95% of women are just not interested in meeting a random guy. so it's your job to find the other 5%
and you need to be more persistent. sometimes women give you a soft rejection to see how bad you want them. you need to keep pushing a little more after the soft rejection until you get a hard rejection.
and you know what? approaching random women IS weird. it's something most men don't do.