OP

It is not just you
It is important to hold onto the fact that, when someone is a dissident in a cultic milieu, they will be gaslighted and will be treated with disdain.
I have been ignored, treated as though i am insane and deluded, treated with contempt and derision, blamed for the crimes of others and alienated from people who I was close to due to the machinations of others.
There was a time when it distressed me greatly. It can be maddening (literally) to be treated as though you are insane, when in fact you are sane and the world is going mad.
Understand that, if you were not capable of making a difference you would not be on the receiving end of gaslighting.
Things that have helped me include; watching films the narratives of which resonate with what is happening in the word now.
Films I would recommend
Alien and Aliens
Invasion of the Body Snatchers (the original and the remake are both wonderful)
The Stepford Wives (the original not the remake)
The Night Of The Hunter (the original)
Ex Machina
I stay strong by ensuring I eat well, exercise regularly, spend time in nature and reflect upon the natural word. I find writing poetry and prose and making art to be therapeutic.
Keep your friends and allies close and finally
Understand and keep telling yourself that it is the world, not you, that is going mad.
If your physical fitness permits, join your local amateur boxing club (ABC). ABCs are cheap as chips, will get you fighting fit and healthy in no time and you get to spend a lot of time hitting big men in the face. You may make male friends as well as developing fighting skills and increasing your health and confidence. I appreciate that some women may not feel comfortable with this option and it is not for everyone, but I found it very helpful and empowering and would recommend to others who have an ABC nearby and who are sufficiently physically fit to do so.
What works for me may not work for you. Find what works for you and do what you need to do to tsay well.
Pace yourself, take care of yourself and understand that it feels overwhelming , illogical and insane because it is overwhelming, illogical and insane.