Rate my team: Mega Salamence Sand

I'm trying to build a team centered around mega salamence supported by pokemon like gholdengo and sand rush excadrill to take care of possible mega mence counters such as mega floette, mega froslass, etc.

Ttar is there as a sand setter for excadrill and as a secondary mega for weather war matchups. Occasionally, I'd only use normal salamence as an intimidate pokemon and tailwind setter. Sometimes I'd lead with mence and ttar and decide which mega to use depending on the matchup.

However, I've come across a few problems:

1. I struggle against trick room teams as I have no way to prevent or reverse trick room. My pokemons aren't really tanky besides from ttar and that's it.

2. Wide guard negates spread damage from ttar, mence and drill.

3. A good rain player (i hope no one plays it anymore cuz of rillaboom) can shut down my sand team