You don't need a friend group to get laid. I would recommend that you have a good social circle if you want to get laid because it will make things much easier. You will have to put forth a lot more energy to get laid if you rely upon cold approaching or swipe apps.
You're also more likely have longer relationships if you meet women within a social circle than if you meet women cold approaching or on swipe apps. Women have more of an incentive to treat you better in the early stages if she's connected to you in her social circle because there are real consequences if she is rude. When you meet a woman through cold approach or on a swipe app, she has no incentive to treat you well because there are no consequences if she is rude, ghosts, flakes, etc. Her circle of friends is not informed of her bad behavior. If a woman treats a man in her social circle in a lousy manner, she'll hear about it from the circle. She doesn't want to have these conversations.
Due to social pressures, when two people meet through a circle, they are more likely to be compatible for a longer time.