It is a very good thing you are doing recognizing thisis a problem early on in your life. You are being honest and upfront with yourself and that’s a great start. We all know this is a progressive disease. Its not about the amounts, it’s about the control it exerts over your mind. Trust me, if you let this go on, the amounts will grow. As you have found even something that is “free” can trigger the need to gamble progressively more and more.
So good on you for reaching out for help. Don’t be embarrassed at all, it is a real problem that affects tens of millions worldwide, young and old. The quicker you get help, the less pain you will go through. I resisted help for years and it cost me very dearly. I hope you choose a different, better path for your life.