

If you want to store your map preferences, save the preferences to your account and make sure you’re logged in.
I’m not saying anything like this is preferable or whatever but there’s also little sense in removing all semblance of user experience in favour of removing power from tech giants.
Most flexible would be to make a PHP form with a MySQL/PostgreSQL database.
If you want an off the shelf solution maybe a Microsoft Power App or a FOSS alternative?