Do I really need a girlfriend Or am I just manipulated by my surroundings?

i am 19 boy. i never had a girlfriend and not even a female friend but sometimes i feels like i should have a girlfriend or even a female friend. These thoughts are come after a hangout with my friends and when i open my instagram. i am very confused and sometimes i overthink for 2-3 hours about it. help me please. Sorry for any grammatical mistake