MCH is a really hard class to play well. Have you tried BRD? It's a much better choice overall and fills the same role in party:

- BRD is easy to play while MCH burst requires blind muscle memory to pull of properly due how Flamethrower works.
- BRD has more freedom with movement. No need to stand still or in melee range because of Flamethrower like MCH.
- BRD gets better and better with gear because their DPS is tied to Critical Hit. They were already close in personal DPS and it seems like this tier they might actually pass MCH.
- BRD can take advantage of various raid buffs with their Iron Jaws snapshots pretty much whenever they want, MCH gets absolutely ruined by their static burst schedule when raid buffs don't align or fight mechanics prevent it from happening.
- BRD has stronger raid dps support which can be further enhanced by feeding them MP for even more Foe Requiem uptime.
- BRD has stronger raid defensive support through Nature's Minne and Wanderer's Paean.
- BRD is better against multiple targets due to multidotting, while MCH has very limited options for AoE damage.
- BRD gets hurt less by latency while MCH becomes impossible to play at high ping due to reliance on double weaving and Rapid Fire weaving.
- BRD gets unique quivers with all bows, while MCH glamour is stuck with the Gauss Barrel attachment and lunchbox.

So yeah, unless you really really wanna play MCH, I would recommend trying BRD instead. You might actually find it fun!