I spent last three hours trying to connect my newly bought Xiaomi phone with my laptop through wifi, and sigh.. I'm tired!
The darn Android's File Manager
can see all the three laptops connected on the network, but
can not enter them saying 'wrong login or password'. The laptops
can see each other on the network and
can enter each other with the proper passwords. But the laptops
can not even see the androids connected on network.
I have Netgear Centria WND4700 Wifi router with 2TB internal HDD installed in my home witch provides internet access to all devices. The funny part of the game is that, all the androids and Windows 10 laptops
can individually access (read/write) the central storage HDD
and the internet very well! What the heck! Why the phones and laptops do not behave properly with each other!

A person with limited technical skills like me can only swear like a trooper in the situation.