I bookmark them in a folder named "Monthly". Once a month, I right-click on that bookmark folder and open them all.
I also have similar folders called "Daily" and "Weekly".
I set a recurring reminder in my calendar to remember to open the weekly and monthly ones, so I don't have to keep track of whether I did or not.
Modern equivalent to blogs would probably be vlogs (videos on tiktok or other platforms like that)
Blogs are still a thing, check out WordPress.org
Another option is publishing on a place like medium.com
None of the above are optimal regarding your concerns about data collection, etc.
To address that, you could just set up your own personal website, if you don't mind learning how to do it