Share Internet from Mac to Android through WiFi

I'm gonna explain what I did for it to work for me.

1-I connected my mac to internet through ethernet using thunderbolt adapter.

2-System Preferences -> sharing -> Internet sharing. choose "share connection from" ->  "thunderbolt ethernet" and "To computer using:" and choose "WiFi"

3-Click on "Wifi Options", choose the largest channel (48 in my case) and choose a password (WPA2 for the security).

4-Make the password 12 characters.

5-The configuration is completed, now tick/click on "Internet sharing" tick box on the left side.

Congrats, you got it to work ;)