Just started Iceborne/Master Rank. Interested in Glaive, Long Sword, and Bow.

[worm on a sidewalk]

Any ideas or recommendations? Specific weapons I should look for or monsters to farm?

[The High Seraph]

Viper Kadachi LS is good for story . Bow sucks till Velkhana. Even after Velkhana .. it just hit playable tier . Real time of bow will start after MR 70 and hit its peak if u got god tier level 4 decos like Weakness Exploit / Constitution , 2x Challenger 4+ etc , considering that u already have base game bow decos like Bow charge plus , spread shot , some Tenderizer jewels .

[...]

Just use HR weapon if you have max gear back in the days, also 200HP, because 400 defense is nothing in MR.

[gachi is manly]

Viper Tobi Kadachi Insect Glaive is a really solid weapon that's good in a wide range of fights. Fully upgraded it does good raw damage, paralysis, and can get purple sharpness with some handicraft.

Hell, I still use it for some fights even now that I have higher rarity options.

The new variant Odogaron's Insect Glaive is solid too. Has massive white sharpness so you don't even need handicraft with it. So if you're struggling to fit handicraft into your deco slots then it's a nice option.

[Kimchi]

For Insect Glaive, I'd recommend to have 5 kinsect, one for each element.
High-speed kinsects are preferred for extract gathering.
I'd also recommend the Viper Tobi Kadachi Glaive for early game, as it has Paralysis.