your first point is correct, and is also true in defense, defending with 2 is less efficient than defending with 3, as you mentioned tapping with 1 early to make attacks inefficient is a common strategy.
the basic strategies to master are delays, efficient bonuses, how to figure out turn order, after that you can move on to attacks by percentages/conditional delays and timi blockades. all of this is described in Dan's links.
Good luck! You seem to be on the right track to improve and just being willing to read some guides will put you head and shoulders above most players.
edit: the MH link on the strategy guides page is broken, since it's kind of a reference here is the updated link
https://warlight.nghood.com/
Edited 2/6/2025 14:46:53