First of all, it is worth playing in such a way that it is not very offensive and not very sorry for the lost money.  And always exit the game with a little joy if you're lucky and win a little.  Or end the game not just with grief and anger if you lost, but on the contrary with confidence that the money you lost is just your payment for the pleasure of the game and for the emotions and experiences that you just received during this game.  And if you treat gambling in general in this way, then life and gambling become a much more enjoyable pastime for you.  And in general it becomes calmer and more peaceful. 
And life will sparkle with new colors, crossing out your sadness and despair from the next losses.