The answer from @Bohemian is correct - but not practical. You will want to change the key-binding for accessing the menu:
Spotlight and select the
The one you want to change is
Move focus to the menu bar : I have chosen
Ctl-; that is much more do-able than the crazy default finger pattern
This only reduces the pain of accessing menu items. They are still v clumsy versus counterparts on Linux variants as well as windows, the defunct OS/2 etc.
This is an ongoing HUGE miss by Apple - and it shows their disdain for keyboardists and accessibility (not to mention carpal tunnel issues) - by disallowing use of the keyboard to access the many menu items in complex applications.
Pycharm, and friends have well over one hundred menu items: it is far out of possible to create - let alone remember - that many custom shortcuts. Apple instead doubles down on their keyboard mnemonics bashing by insisting that developers remove them - even from applications originally intended for other operating systems.
Note: I have been using Macos full time 7 days/week since 2013 - and had already run into this problem - and found it essentially unsolvable - in 2010. It is not a matter of "education" about so-called alternatives.