I want quickly move to a project file, as in Tottal Commander.
For example: I am in the directory
by pressing Alt + letter,
file/directory starts with that letter
cursor jumps to the desired object,
then the next character, the search is specified (if possible), and the cursor jumps on.

it reduces the number of clicks on the keyboard to a minimum, and do without a computer mouse

Did you get a chance to try v9?
In this version you can press Ctrl+Alt+N and start typing file name to select it in the dropdown

maybe