1. Be broke
No money, no honey. Simple as that. You can't buy anything. No dates for you.
2. Be jobless or underemployed
This problem is feeding to problem number one. If you can't work or you actively decide to not work, you'll never have money to make a living for yourself. If you cannot support yourself, how are you going to support someone else?
3. Be ugly
If you look like a dumpsterface or you have ugly spots on your body, then women won't be attracted to you. They will always look away because you are aesthetically ugly.
Sadly there is no known cure for ugliness. But there are surgeries available to alter your appearance.
4. Be fat
No, really, I don't blame women for ignoring fat guys. If you are fat, then you have to lose weight or date within your means. And that means you can date mostly fat women.
Somehow you accumulated that much excess body mass. It's also you, who has to lose it if you want to be visible to women again.
5. Have little or no ambitions
Be lazy. Don't do anything. Sit on your couch and watch TV or netflix all day and night long while drinking your 5.th beer and then complain in the end, that you cannot find a girlfriend. Hmmm. You will repel women away quite effectively but then you are already invisible to them because you didn't go out.
6. Be short
Bad luck pal. No need to even think of asking women out, who are at least as tall as you are. Ask only shorter women out because otherwise you have near zero chances. It's just that women will always want to date guys taller than herself. My condolences for your handicap.
7. Be a misogynist
Hate women just because they are women. Be a MGTOW. Hate them because the few, who you'd like to have as a companion have never smiled at you Mr. Rodger! So go online and whine about how all women date only jailbirds and jerks and rich sugar daddies while ignoring such nice guys like the one you are and then call them shallow bitches and gold diggers. UNATTRACTIVE AS F~CK! You'd be surprised by the results.
8. Try too hard to be "alpha"
Yep. Be the alpha douchebag and label every other guy you see as beta because you need to prove your dominance since this is at your very stake you big boy! Because if you don't then women might bang the betas and that means less pussy for your alpha dick.
Or... just use these terms like alpha male and beta male. This works too.
9. Be a girls ass kisser
Kiss the ground she walks on. Kiss her feet. Kiss her ass! Pay for everything for her and agree with everything she says. Allow her to stomp on you like a doormat. After all this is all you are: Disposable.
10. Be the average guy - yourself
Yes, you heard it right. You can be yourself but you are really like most of us are - average. We average guys are by default invisible enough to women. You don't have to actively do anything to be invisible to them because you and me we just are.
If you qualify any of these 10, then you are effectively invisible to women.
Have a nice day!