Took me 4 tries to beat Solrock

I just did a Lunatone raid because I didn't have on, and I lost on the first attempt. I went with Metagross, Kyogre, Groudon before timing out (it hit 0 HP as the timer hit 0). On my second attempt, I used my Tyranitar, Mewtwo, Kyogre and Groudon and beat it with 15 seconds left. It had Rock Throw and Psychic. I just need Wynaut and I'll have completed the dex!

What level are your Pokémon? Lunatone shouldn’t be all that difficult really. It’s counters are top notch for the most part

I don't get why it's so difficult. Are your counters comfortably above L30? The Pokemon you've listed are strong, you should be winning this one handily. Perhaps swap one Gyarados out for a Tyranitar with Crunch, and maybe the fact that Earthquake and Shadow Ball are really slow moves didn't help.