So, use your time wisely.
If you finish your week's work by Tuesday midmorning, spend the rest of your week doing something worth YOUR time. Treat this situation as an opportunity, not a curse.
You could be learning something. You could be prototyping an improvement to some aspect of your employer's software suite. You could be writing tutorials, or even books, on how to do something interesting to you. (How do you think all those O'Reilly books get written?) You might do a side hustle of some kind. It's probably not doom-scrolling.
Before you start doing that, of course, double check that you're meeting your job expectations, and that you're not stumbling into the Dunning-Kruger effect in your job.