How do I stop feeling so isolated?

Whether your isolation is physical or mental, I believe you have to be accepting of your issues/problems in order to be more open to others. Look at the positivity of what makes you, you. Not something that hinders you from the world to share. Not everyone is going to get along with you, but that's normal. There is always people out there for you, who will appreciate your company and who you truly are. You just have to be able to accept yourself and be willing to share a little color of who you are to the world.

You can try by talking to somebody. Or at least try to put yourself out there more. I know feeling lonely isn't the best feeling

Human society uses some principles to just exist and work. The main one is that you have to do something in order to stop feeling so isolated from it. Try to do something spontaneous and unlike for you. Make a new friend, go to the cinema without planning it, call your relatives and just talk. You will be better, I promise.

feel free, go outside and see the world, thankfully that you has chance to life in the world, enjoying life not always looking up to cool people, but everyone is same human being... and go outside meet people that have same interest.

Drawing or writting about this feeling will help you overcome this feeling. You can also look for other activities that makd you feel complete

Start interaction with other. Become a relationship beginer. Be cheerful and friendly. Help others have empathy.

I suggest you smile more, talk a bit more, befriend a few people. They don't have to be popular or pretty, they just need to be able to support you. A little kindness goes a long way!

Reach out for help. There is always help available if you really want to get it. Don't just stay locked in your room. Things will get better once you take action to help yourself.

Try surrounding yourself with new people - take up a new hobby if it helps - and hopefully venture out to new people.

Get involved in social activities, open up more to people surrounding you become the center of attention have no fear of being a wonderful person