You should note that you will probably never feel like you have kinah until you hit 55 and don't have to keep spending it. Some of the things Ashin said are true with gathering and making your own consumables, I know I save a ton of kinah being able to make pots on an alt to use rather than spending 100k on pots for every dredge run I make. Also most of the drops you will find while grinding won't sell for a ton until you get into Taloc's and some of the Elder gear comes your way. It is much easier to make kinah once you get over the level 50 hump, though leading up to it I can say a great source will be from selling coins, mostly gold and platinum given your level as they seem to run for 40-60k each.
It may seem slow, but soon once you're back in Brust you will find better drops to sell for more, it will get better, and if you are truly worried about gear you can also use those platinum coins for some decent stuff as well. Also gather aether, it always sells well, and quickly