How do I keep logged in eventhoug I want to delete all data?

I want to delete all my data, including cookies, when I close my browser. I want to delete cookies as soon as I close a tab.

But I want to keep being logged in on Telegram and WhatsApp. So how do I make an exception to data I do not want to be gone when I close my browser?

Just Create a New Profile for Telegram, WhatsApp and other websites usage for which you Required to be Logged in.

Settings - Shields: “Forget me when I close this site” ← this must be turned on. For exceptions: load the website in question and click on the Brave Shields icon in address bar then go to Advanced controls section and turn off “Forget me when I close this site” - your login will be saved from now on.