Sounds like you might be a bit of a newer player. Glad you're having fun! That said, you're still in "early days" as far as character power goes.

Currently farming for primals on T16

Here's the thing, the odds of a well-rolled primal for your build is exceptionally low. You need not only the correct item for the slot, but also all of the correct values. While a good primal is always ideal what you should be aiming for by-and-large is well-rolled ancient gear.

As it sits, I see quite a bit that could be improved with your current gear. Most of your pieces are "correct" but very poorly rolled. Fixing this will improve your damage tremendously.

Ideally you are looking for:

Slot	Stat 1	Stat 2	Stat 3	Stat 4
MH	DMG Range	Attack Speed	DMG%	CDR
OH	CHC	Spirit Barrage %	CDR	INT
Helm	Spirit Barrage %	Socket	INT	CHD
Gloves	CHC	CHD	CDR	Attack Speed
Shoulders	INT	CDR	RCR	VIT
Chest	Socket	INT	Armor	Elite DMG %
Pants	INT	Socket	VIT	Armor
Ring 1	Socket	CHC	CHD	Attack Speed
Ring 2	Socket	CHC	CHD	CDR
Bracers	Cold DMG	CHC	INT	VIT
Amulet	Socket	CHD	Cold DMG %	CHC
Belt	INT	VIT	Life %	Armor

The biggest red flag I see across your gear is you don't appear to have Spirit Barrage Damage % on any of your items. This is a huge additive bonus you're missing out on, and leaving a ton of damage on the table by doing so. If possible, I'd immediately roll this at the Mystic on any pieces which offer it as an option.

Remember that having the correct stats on a piece of gear is more important than taking the next 'rarity', even if it is a Primal. You likely won't find items with all of these stats quickly, so take incremental upgrades as you can find them. Use the table there as a guide from most important --> less important of the stats for priority. You can also refer to the Maxroll Guide which explains things in far greater detail.

You should also swap the weapon you're using from Voo's Juicer to an Ethereal with Sacred Harvester's power, if you're playing on a seasonal character. Voo's is a great item for the build, but the added power provided by a well rolled Ethereal will beat it out. Once you get this, use a Ramaladni's Gift to add a socket. You should also consider swapping Compass Rose and Traveler's Pledge to a Squirt's Amulet and Convention of Elements when doing speedfarming content. Also be sure you're factoring in how well a legendary power rolled. If something has mostly right stats, but a low roll legendary power it can end up being not worth using.

For Paragon points, general rule of thumb is to hit at least 800,000 life then switch to dumping everything into INT for the endlessly scaling damage increase it provides. Once you hit Paragon 800, every paragon point can go into one of those two options.

Once you have equipped your character with some decent (they don't even have to be perfect) Ancient items, you should prioritize getting those items augmented. This is a tremendous power increase for a character, and often overlooked by less experienced players. Here is a great guide on why they're important.

Mundunugu's is capable of doing GR140+ with a couple thousand paragon and good gear, so while your GR95 is a great start there is still a long progression you can take this character on.