TYPO3 RealURL extension needs lower PHP version because of scheduler. Is there a workaround?

Question

I want to use the RealURL extension but it needs the scheduler extension which tells me the following:

Your PHP version is higher than allowed. You can use PHP versions 7.0.0 - 7.2.99.

I am not able to change the system my TYPO3 is running on so I don't really know how to continue. Is there another extension or a workaround how I can still get the RealURL functionality?