Feeling very alone

Hi. My 17 year old son has been struggling for the past 3 years. He left school last year but didn’t attend his last year as the school refused to support his needs. I’m now on my 3rd EHCP application and he has recently been diagnosed with autism, ADHD and severe OCD. He suffers badly with his mental health. Can feel suicidal. He has severe social anxiety. He has no friends and is desperate to go back into education to make friends. 98% of the time, he sits in his room, playing on his PS5 or draws. I work 3 days a week but come home every couple of hours to see how he is. My husband has moved out because their relationship is strained. I no longer see friends or go out. I’m looking for people in simulator situations to chat to. Maybe you have a teenager that would like to make friends? I’m desperate. My mental health is awful. Im doing everything on my own….Norfolk area