Installation issue, plugin doesn't seem to be loading

[romanprocopie]

Fresh and clean Ubuntu 20.04
vim 8.1
python 3.8.10
mono-complete 6.8
dotnet sdk 3.1 and 5.0 (I need both)

Installed pathogen, syntastic, supertab, vim-dispatch.
Cloned vim-fsharp in ~/.vim/bundle
Documentation says "run make in vim directory". Assuming this is ~/.vim/bundle/vim-fsharp (it does contain a Makefile) that went ok and looks like it installed something that sounds like a lang server

Result:

• None of the plugin commands work
• :make command runs a shell that says

make: *** No targets specified and no makefile found.  Stop.

Press ENTER or type command to continue

Note: I expect it to not need any Makefile's