well.. while i am hestiant to say this (since you seem to be having a rough go of it on cyrene) i am willing to give you a tour/demo of how i play on cyrene.
where to find ores and en mats
how to skill on pedes
where to find previsouly mentioned high mu low lvl mobs
and a few other things if they pop into my mind.
and its pretty easy to sell sweat on cyrene i have sold over 50k sweat from 2 to 5 ped per k. the only way to ever sell sweat is to have patience. (as i was writing this is sold 6k sweat at arc head quarters)* and 2 ped per k for a free recourse is a good price
pedes do have mu. you just have to stack them which is hard for a new player but nothing worth while is ever easy. also breaking even or even profitting on a mob is a matter of long term not just one or two runs its over a 1000's kills.
cyrene is not a planet (as of right now) where you can drop in for a day and profit or break even in most cases (19k hof 0_o)... you have to learn where things are, what they drop, and how to read what they are dropping at the moment.
i dont know much but i am will to share what i think i know if your intrested. i can be found most time at arc head quarters, and the hunting grounds.