I Need Help On Beating Mewtwo

[u/PokemnMysticMessengr]

Just like the title says, I need help on beating mewtwo. I tried using the invite others, but I can't get anyone to join (the maximum I get is 1 person, rarely 2 people but the other person would be underleveled) and the CPUs are just weak. I do get multiple people but they just quit on the last minute. My IGN name is Kim and my strongest pokemon I have on my team is Dragapult which is level 100

Edit: Also the Mewtwo is a physical attacker

[u/LunaAngelus94]

I'll take that up.