Good to see you back here Joe, though it is tough that you have gambled again. You are not stupid. You have an addiction and that will lead you to gambling if you let your guard down.
You don’t say how you gambled – did you by-pass the on-line blocks you set up – if so you need to strengthen these. If you are now on your own you will need to get good support for yourself. It is easy to think, “if I have a bet I won’t hurt anyone except myself.” Does anyone close to you know about your gambling, that can support you? If not consider talking to your GP about counseling, or visiting a GA or similar group locally.
There are the groups here if you need to chat about what is going on. That might help to identify triggers and keep you away from betting again. I wish you well.