Spoilers ahead
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Red haired girl, I’m assuming you are referring to the Vice-Master. No she cant be trusted.
Old Lady, the Master, can be trusted.
Drunk Guy can’t be trusted.
Orange haired dude can be trusted.
MC and Miro are human test subjects that were tortured/experimented on to create the ultimate non-human weapon (both are successful). Drunk Guy is also one, but he is a failure.
The group called Emancipators are good and bad. Because on the group there are 2 subgroups. The good ones (from Old Lady faction) and the bad ones (from red haired girl and drunk Guy faction). Though the good people don’t know that yet…
I’ve refrained from giving too large spoilers, so I hope you won’t feel unsatisfied with my answer (also English is not my first language

can somebody please spoil me? I'm in chapter 40 and there's just so much shit going on and so many secrets. Like can The Emancipator's (red haired girl, old lady, drunk guy and orange haired dude) be trusted? What are they hiding and how is Miro and mc connected to them? Are they bad people? What are their true intentions and what happened to mc in the past?