What Is the new Meta Decks in this current Season?

I just came back from HPMA after almost a year of being gone. The thing I loved about HPMA was dueling and I definitely went back to it.

It was pretty easy climbing to Diamond after copying the Bellatrix deck of the Top#6 global player. But now I've hit a wall, cuz I'm just 400 points before reaching Grand Master and my opponents now is literally double my health, while im 3600+ health (lvl63) my average opponent's health is about 5000+. Really humbling me and making me realize im still a noob compared to veteran players

So I want to focus on having a main deck, so I can level up cards that I know I will use instead of just upgrading all my cards and wasting my gold.

So what's the Meta decks this season? What decks do you notice higher rank players use? How do you counter a certain deck?