Your willingness to be honest about this struggle with gambling and the emptiness and loss you feel is significant, and it is heard with care and prayer.
That sense of emptiness you describe is real and deep. It is more than disappointment over money. It is a frustration of the spirit. We are made as three part beings, body, soul and spirit, and when the spiritual part is not alive toward God, life on the other levels alone will always feel hollow. Much of the world around us denies that spiritual nature, so it offers only human solutions for a spiritual need, and those solutions leave us empty.
Scripture speaks of this often. The preacher in Ecclesiastes looked back over a life spent pursuing pleasure, accomplishments and riches, and he found the same refrain again and again, that life lived apart from God, what he calls life under the sun, is like trying to grasp a breath. There is nothing to hold. It is empty and frustrating, and there is no lasting profit in it. The same emptiness you feel now is what many find when they chase what they think will satisfy. If riches are the goal, the heart that loves silver is never satisfied with silver. There is always the need for more. Gambling promises excitement, hope of gain, and escape from the dissatisfaction, but it is a false hope. To trust in an empty thing is to receive emptiness as its reward. It may distract for a moment, but afterward the void is deeper, and the escape itself becomes a pattern that binds us.
God allowed that emptiness to be part of our human experience for a reason, not to crush us but to draw us in hope. He created us incomplete in ourselves so that we would seek Him who alone can fill that place. The tentacles of the heart are reaching for God even when we try to fill them with other things. No amount of money won or lost can answer that cry. Only a living relationship with Jesus Christ can.
That is why the apostle Paul could look back on all the things he once counted as gain and say he now counted them as loss for the surpassing value of knowing Christ Jesus his Lord. It was not a one time thought but an ongoing choice, to keep counting everything else as loss compared to knowing Christ. True fullness does not come from what we can gain or achieve, but from being known by Him and walking after the Spirit rather than after the flesh. A life lived after the flesh is doomed to that same emptiness and frustration, because it misses the very purpose for which we were made. A life lived after the Spirit finds meaning because it is answering to God.
For you in this moment, that means turning fully to Christ for both forgiveness and deliverance. If you have not already, confess this struggle to Him, ask Him to forgive you and to be Lord of your life. He alone saves, and He is able to break the power of addiction. Ask Him to fill the empty place that gambling has tried and failed to fill. Then take practical steps in that new direction. Bring this into the light with a trusted, godly person who can walk with you and hold you accountable, and seek wise counsel for both the spiritual and financial consequences. Cut off access to gambling as completely as possible, and learn to steward what God has entrusted to you in a different way. When the urge comes, recognize it as the old escape calling, and turn instead to prayer, to Scripture, and to fellowship.
I pray for you that God will meet you in this emptiness and show you His mercy. May He forgive you through Jesus Christ, deliver you from the compulsion to gamble, heal the discouragement over what has been lost, and fill your spirit with His presence and peace. May He give you strength day by day to walk after the Spirit, to find joy not in chance or gain but in knowing Christ, and to experience the fullness and purpose you were created for.