People aged 21+ how do you cope with being single in adulthood?

By embracing myself completely. I became single at the age of 21 after coming out of a six year relationship and engagement. It can be a scary thing to feel that you're facing the world in some sense, alone. But there is a great positivity to it. Your early 20's is such a formative part of your life, it's a great time to lay the foundation for the goals you want to achieve and the life you envision for yourself. It's a time to travel with friends, try new things, step out of your comfort zone and really embrace life. I focused on getting to know and love myself more than anything. I use my time to improve my mental health, and to come more and more into myself. Once I got comfortable in truly being alone, I found that I didn't even really want a relationship. I'm open to it and if I happen to find myself with one I will embrace it, but I know that I can be happy and fulfilled as an individual. There is so much power in being single, it's just a matter of finding it.