When registering on gambling platforms or any other platforms, it makes sense to use aliases for your email addresses. This is convenient and safe, as your main address won't fall into the hands of abusers if the gambling platform's user database is hacked. It's just a pity that not every email service offers this feature.
Yes, that is what I did if I wanted to register on gambling platforms. That saved me from many things that could occur. I don't have to use my main email or my other emails. If it is necessary, I can register another email address and that will not take too long

You can use any email service you want but make sure you are satisfy and comfortable with the service.