Use a taskbar replacement. I use StartAllBack [0] because unlike the Windows devs, I use my monitors in landscape mode (sassy way of saying it gives you a vertical taskbar). It’s not free (not even as in beer, cheap and a one-time payment though), but it’s the only one that did what I wanted. If you are okay with a horizontal taskbar, there are even FLOSS tools.

[0]: https://www.startallback.com/

I recommend using RetroBar https://github.com/dremin/RetroBar

Its portable and gives your taskbar look of Windows 98 -> Vista.