Many don’t take internet and video game addictions seriously but they are for sure a real addiction like any other and often a professional and experienced therapist can help you out.
In the meantime, the fact you are alive right now means Hashem has a purpose for you so don’t sell yourself short and don’t sell Hashem’s master plan short either. You obviously are feeling in a deep pit but don’t try to pull yourself all the way out all at once – it’s too overwhelming. Just focus on doing some little positive thing every day and build on that like you would build a muscle. Over time it will snowball into a lot of growth and success but you NEED patience! Trust me. Also try reading the sefer “Meshivat Nafesh.” It can totally change your life and you can even just learn 5 minutes of it a day (still have plenty of time left to websurf :p ) B’hatzlacha tzaddik, you’re gonna get through this