How do I Ungroup Task Bar Buttons in Windows 11

Not being able to ungroup Task Bar Buttons is probably my biggest frustration atm. It was so tremendously useful to see at glance which files I had open across my apps. Now it's just showing a repetition of taskbar icons. I stopped counting how many times I clicked the wrong taskbar icon to find out my files were open under the other one. Once you figure that out and you want to see which files are opened you have to hoover over the taskbar icon, but when you have a lot of files open and you move your mouse too wide/high/low you will lose that view and have to hoover again. Madness. This "feature" requires a roll back, big time.

i would also like to say, this is a very poor design choice, (as explained at the start of this thread)
on top of being that, this is forcing me to deal with less choices, and less functionality,
which makes also bad product.

the answer given by sumit is also unsatisfactory, with no acknowledgement of the error made by this very poor design choice,
and no acknowledgement of responsibility, or willingness to change, or correct the error made.

i got windows 11 on a new computer. i cannot downgrade. i am forced to deal with this bad product.
if i am using third party solutions, i might as well go all the way! and dump the whole product for a product from someone else.

i cannot afford this way of work at my line of work (pharmacist)

My productivity has gone down considerably since I was issued a new company laptop on Windows 11. I often have 10-20 Excel windows open at once. Having them all combined on the taskbar is maddening at best. Give me back the option to uncombine them!!!

PS: I cannot install any 3rd party software on this company laptop.