It is not a complicated matter, it is possible to separate everything by handling only 4-5 emails. For example, 1 email for gambling platforms, 1 for personal use, 1 for joining various crypto related events. In this way, one email can be kept for each different platform. It is not something that you have to create separate emails for each individual platform. And if you feel satisfied with doing everything through only 1 email, then you can do that too, it is completely your own personal matter. I see a lot of discussions going on here about this email issue which is completely baseless and crowding the topic.
For most important things, you can assign an email for them and for business things, let's use another email address for them. For accounts on exchanges or online casinos, you can use other emails for them.
There is a last email address that can be considered as throw away email, which can be used for exploration on new platforms that you are unsure about their legitimacy. It's can be unreasonable to take risk for exploration on unknown platforms but I only want to say, if you want to do it, use a kind of throw away email for account registration on such platforms.
Passwords for your accounts are important: must be unique, and different on different platforms. If you use only one password on all platforms, your accounts can be compromised at the same time.
[Guide] How to create a strong secured password.[url]