You are not as hopeless as you mention. The fact that you realized all your mistakes on throwing away your money on gambling and starting to reflect on your actions, is already the first step to recover on your life. Another important thing you need to know is that since you already at your rock bottom, and you are not dead emotionally and physically, what else can break you down?

Many times people think of themselves hitting the rock bottom but never think that this is actually a turning point in life. You can always learn more thru failures than success. Because success boosts one's self esteem and would make someone too ego. Conversely, the qualities you learnt thru hardships are priceless and you would remember them forever. I promise you if you start picking up on yourself consistently, your story will inspire many.

Just like Wang Lei, the best live streamer selling all sort of stuff. He was a gambling addict, and his family members that never gamble, put a bet on him that he would change. Just like your situation, your fiancee that never gambles, put her biggest bet in life on you wishing you would change.

You can no longer worry about the negative side. What to expect from rock bottom? It is the lights from the top. Work yourself to the top man. All the best.