With the competition among casinos, they need to find a way how to sustain the interest of their patrons. Otherwise, they will just hop on to the next interesting casino.
Now most casinos give out bonuses to players and invite them to take part in promotions. This is the tool today that not only attracts, but also keeps people for a long period of time.
If you look at Shuffle on X here https://x.com/shufflecom you could see that they have lots of promotions and contest offer to their community.
They also do some good partnership to streamers before which is good move to be done especially that now this is famous way on how to market their casino.
So what they can add up is to go reach for global market and have a good deals with famous celebrities or sports club since this could bring a lot of traffic for their casino. Also the only thing they need to do now is to be consistent on having promotions since by this way they could attract more gamblers to play in their casino.