I will have this match against him in a couple of days. Really need to win this on

That's him:



That's me:



As you can see i dont have DMR, AMC and AML.

Please give me a good tactic to beat him!
Also, how do i win Narrow Diamond? He'll probalby change to this not sure though and im always losing to this formation even when opponent is weaker. Please give me tactics to those both!