(maybe not a strong thesis but you can change it up)
It can be nice to have many friends to surround yourself with, but it is better to have few close friends.
Many people feel like it is better to have more friends for reasons such as gaining popularity, (you can add more reasons). While someone with plenty of friends may not look lonely, they can be. There is only a certain amount of people that can truly understand and relate to you.
It may seem appealing to have big sleepovers or going partying with a large group of friends, but you can still have just as much fun with one or two!
You can't trust that many people. You can have 10 or more 'friends', but not all of them are going to keep a secret that you just had to share with someone. This can eventually lead to a heartbreak, or make you feel even lonelier than you ever have before.
It is always nice to have someone safe that you can go to when you can't trust anyone else. Whether your feeling really sad, or are in a dangerous situation that not everybody can know about, you are going to need someone you can trust to stick with you through all of the problems you face.
In conclusion, while going out with tons of friends can look fun, you can feel safe, happy, and have the best time of your life with just one person.
This isn't that long, but hopefully you can build off this and make something longer out of it. Good luck :)