@OP I don't think the transaction fees will be cheap in very soon because there's no implementation yet to stop BRC-20 or maybe it's impossible to stop. I think the current fee will become a new normal, just like Ethereum network.
Or ask your favorite casino to accept deposits/withdrawals through the Lightning Network. I believe it's not just the best time to start asking, it has now become absolutely very necessary as a Bitcoin-only user.
Usually a casino is really slow to updating a new development, this because they're either focus to other sectors e.g. promotion, gambling provider etc. I can't remember which casino have adopt lightning network from someone in recommend it in this forum, I only know the casino was already accept lightning network from the beginning.
I believe they will have no choice. They either accept that they ignore their share of the Bitcoin user market, or implement Lightning as soon as possible. Because if some casinos decide that they won't onboard users through Lightning, there are other casinos that definitely will, THEN they get a bigger slice in the Bitcoin user market/become more competitive.