Yeah, what a pity that you complain about missing features that are already there.
There are tooltips - and they are generated by the underlying OS. So please ask Microsoft whether they could display them in a bigger font.
I also have a screen
and I don't have any problems to see the toolbar.
So perhaps a trip to the Windows settings for the screen magnifier would be worthwhile.
All the functions from the toolbar are also available via keyboard shortcut or via the menus.
So if it is too hard for you to hit the toolbar or to modify your system settings, then it may be an idea to interact with MP3tag via these means.
If you want to contribute to discussions about the functions and the layout about the toolbar, I would like to ask you to use the forum search function as there are numerous threads that deal with the topic of the toolbar.
e.g. here: