G spot

I feel like most women I talk to or even see in porn can always orgasm without clit stimulation. I have only been able to orgasm maybe two or three times (only by masturbating) from my G spot. I find it very difficult. I want to be able to have sex without having to tell every guy I can’t orgasm without clit stimulation, they tend to get lazy with it and then I end up not satisfied. Is there any tips or advice on how to make my G spot more active or reachable??