Wow I recall this gambling site with a lot of good features inside by the way I want to tell you welcome back to crypto gambling world I hope you will gives us a good promotion after a long break. Do you plan to run a marketing strategy like campaign or a welcome back bonus to everyone.
I didn't knew any site which exists before named luckybit. Even if it exists what was the reason it was closed ?
The first thing which I note when i open the site is to accept the cookies. I am not sure why they focus so much on this cookies thing ? They want to prevent multiple accounts ?
The site was onchain, that means each bitcoin transaction on the site was a bet, but the past year bitcoin fees goes crazy as you can see in the next graph:

That way was complex to run an onchain game because users and the casino were wasting money on each bet. LB tries to adapt making the min bet bigger but users weren't happy at all with that solution. Now fees are back to normal and LB brings an ofchain engine to offer the users a better experience.
About the cookies, they are necessary for a users' system, without cookies the site can't give a token to each user... That's why they are necessary.