Firstly bear in mind that for most women to get really stimulated during sex is via their clitoris and is difficult to get to it with other positions. If you don’t know where the clitoris is; here is a tip of where to look for it. It is on top between your inner and outer lips of the vagina. There are few techniques that are intended to bring you complete pleasure. Go through the few ones below that can do the trick

Let’s talk missionary (face to face) 
very common and easily deemed boring. People take for granted the power into making eye contact during this intense exercise. With missionary, the secret is, you are able to focus less on thrusting/sex itself and more on connecting. The eye contact might not be easy to do but it will surely build deeper connection ultimately strengthening intimacy. There is more about two people who really love each other and care about connecting more than the position itself, bringing orgasm with very limited physical activity.

Cat (coital alignment/adjusted technique) 
how to do it:a more modified/adjusted missionary whereby the couple remain face to face with the guy still on top, positioning his pelvis slightly higher than usual. 
The man’s legs should be together inside of the woman’s leg.
A woman’s body is lifted a bit up balanced with her elbows.
Play around this position, maybe try with the woman’s body flat down & rather with the man’s legs on the outside as you are bound to get pleasure out of it.
This position will allow his penis to not go all the way (no deep penetration) into the vagina, the stem or root of it will be rubbing against the clitoris.

Cow Girl
Majority of women never really get to experience vaginal orgasm, they easily stimulated via the clitoris. 
How to do it:Woman on top, a perfect position because you’ll be in control & free to play as you please.
Avoid squatting rather be on your knees so as to relieve the pressure that your feet will suffer from squatting. 
With this position you’ll be the driver of your own stimulation and control how deep you want, driving him to hit where you want while setting the pace. You also have all the freedom to do with him as you please, kissing and maintaining that eye contact. Complete control!!

Thigh Master (Reverse Cow Girl with a Twist) 
the same strategy as the cowgirl but the woman here faces the opposite direction while the man gets to admire her backside. The difference here to the normal reverse cowgirl is how both of you position your legs. 
Here is how to do it:the guy lie on their back with one leg bend & the other one stretched out flat.
Straddle his raised/bend leg with your back turned slightly to his face.
Hold on to his knee, and lower yourself onto his penis using the same knee as your support while you do your up & down and back & forth.
Use the bent leg to your full advantage by rubbing your clitoris against his thigh. You can do the normal reverse cowgirl, this is just to show how you can put a twist on any position for maximum performance or rather maximized the chance of orgasm. Once again here you control the speed and direction of where you want him to reach.

Doggy Style
if not all but most importantly this allows the woman to be penetrated in a different angle that will directly hit the G-spot. One of those positions that need no “how to do it” explanations, where others say here size does matter for the guy to go deep enough to reach the spot.

Spooning/The Spoon
the name derives from how two spoons may be positioned side by side with bowls aligned, like how you will pack away your spoons in the kitchen drawer. Having sex while cuddling, a lot of body contact and touching everywhere for clitoral stimulation and hitting the G-spot.
How to do it:lie on one side while your partner lies with his front pressed against your back. A very relaxed longer lasting and comfortable position for both partners. 
 Lift the upper knee to allow your man easier penetration. Rear entry position that’s also great for pregnant women. 
After a hard day of work position as it requires less energy yet intense or for the relaxed morning glory especially if you want to avoid that not so fresh morning breathe. Opt for this one if you want him to go longer especially if you are dealing with the “ready or not here I come” kind of guy.

Sex has to be a give and take pleasure for partners. For both to enjoy the ride, there has to be a mutual understanding of what is expected from each individual. There has to be clear communication of what makes them tick and openness in trying out different things. There are plenty of sex positions but not all will work in favor of your orgasm as a woman. If you are not open to trying new things you might never find more of what makes you go absolutely crazy. Keep trying!!!

** IN SEX THERE ARE GOOD & BAD SEX DAYS JUST AS IN LIFE THERE ARE GOOD & BAD DAYS AS WELL BUT WE STRIVE FOR A BETTER NEXT DAY**