Is there anyway I can have custom commands for google assistant, which will show results how I want it to be?
IFTTT now supports Google Assistant. You can create your own commands that interact with any of the IFTTT connected platforms. For an instance you can have a digest where you give notes to GOogle, and at a custom time every day you get those notes sent to you on email. Direct link to Google Assistant account with a lot of applets
As IFTTT interacts with all kinds of platforms, you have a large world of opportunities when it comes to creating your own commands. There are a lot of pre-made applets, including things like turning off lights, there is even one where you say "good morning" to the assistant, and it turns on a coffee machine