I keep getting demolished every game, and i don't know what to do anymore.

I'm currently elo 731. I started well, wining 2 of my first 3 matches, but it all went downhill afterwards.

Now i lose almost all matches. I must have lost like 19 of my last 20 matches. One loss after another.

Whatever strat i go for, i fail and get destroyed.

I pick strong land civs in land maps (huns, franks), i play to their strengths, i go for strong economy and balanced armies, i bought DE to be able to be more zoomed out, i learned the hotkeys, i even got the small trees mod if that counts for anything lol. I even start out with a strong dark age, and my score is always 100 points over the enemy in the early game, but then i get rushed, i lose momentum, and i get destroyed.

I don't know if i'm doing things wrong, or if i just have terrible luck.