Yes, I am aware of that and for that purpose I have a separate mail which I use on junk sites.
I keep my main email segregated and also use 2-3 set of passwords which I change on alternate sites.
But yeah, knowing that we have open source password managers which we can use I'll try to use different passwords for different sites going forward.
You have good practice but you can enhance it more in security aspect with password manager softwares.
It is very important to make your backups that are so vital for your accounts and funds. You can recover your passwords but it needs time and if recovery fails or needs some complicated steps, you will see it firstly inconvenient, and secondly risky.
So backup, backup and backup, your email password, Duelbit account password, and surely 2FA if you have it.