So I thought that maybe I could produce some examples of common phrases and sentences that won't insult a woman.
Of course you might imagine, there might be one who will find anything insulting. But be advised, that some men are assholes - and some women are too. These examples will minimise the "threat" of diminishing your already fragile masculinity.
Generally speaking, we're talking about respect. Respect is this cool thing which basically states that you feel the person you are addressing is at least at your own social, intellectual etc level. Respect is when you understand the person you are addressing has a significant amount of achievements, has their own life, their friends, family, public presence, that they are an intelligent human being so before passing any form of judgement (though I wouldn't recommend passing judgements at all) you learn about them, about their life, what they do, what kind of a person they are. Respect is cool. Women like it. You should try it.
If this general term is still too tough, I'm gonna give you some examples of compliments that aren't respectful and some, that are genuinely quite cool.
ok so let's start with bad:
whistling - are you actually trying to attract a dog? Should we bark? Or are you at a dog level of intelligence? (no offense to doggos, they are super intelligent but you know what they are as well? Respectful!)
screaming while I'm passing you on a bench "Oy u single?!" - Literally as I hear this you don't even exist. You're just a retarded sentence floating in mid air. I didn't even notice you. And I will ignore you even if you're Brad Pitt.
whistling and then running after me asking for a recipe for spaghetti - actual pickup method personally witnessed. Although quite hilarious, running after me while I'm just minding my own business doing shopping in Aldi is just gonna get me confused.
trying to grope a woman undetected while on a bus - you should go to a psychiatrist and sign yourself up for a mental treatment. Best locked.
good stuff, watch out:
complimenting the music I listen to - Radiohead fren is my fren.
complimenting my tattoo - yes I did suffer a lot having the needle drill down my spine but it's a statement to my identity and I'm proud of it.
complimenting my determination, my hobbies or the stuff that I make without "clever" comments like "ehehehe you got a snake, one eyed?"
even complimenting clothes is fine as long as you don't go all "ooh nois tits!". That damn dress might've costed fortune and of course I'm proud of it.
Basically all complements that are not meant to point at a body part and make women feel like sex objects, but rather actual hard working human beings.
If you're still confused about it, may I redirect you to this brilliant The Rock Test which you can exercise while speaking with women.
And if you're still confused... well, can't do much in your case then.