Halo wars multiplayer help

I’ve been playing a bit of Halo wars recently and to be honest with you, i’m not too good.
I don’t know any strategies to use, and I lose quite a lot.
I know most things about the game e.g. troops, upgrades all the basic stuff, but when it comes to competitiveness I really don’t know what to do.

If there’s anyone who would want to help me get better at the game, maybe teach me some strategies and what methods to use, I would really appreciate any help.
My GT- SACREDSTRANGLER , if you want to help me you can add me, but if you do could you send a message as well, just so I know what it’s for.
Thanks for reading, and for any advice.