how can i get my old guardian changced to my new guardian and than have my old cace in Omaha, Ne.droped and changed to Gage county please let me know

My guardian that I have right now is very mean, rude, she has also made very evil remarks about me. She even said that I could not have my own apartment with my best friend. Who Wants to be my guardian, and her name is Frances YRLE. She is in a wheelchair some times because her legs are weak. She is 65 years old. She had a husband that died in Jan.2020. and I am 29 years old. and for 4 1/2 years I was living in Valley, Ne. on my own. I learn how to shop for food, close. and I also was taking my meds on my own as schedule. I also had a volunteer job at the store in Valley, Ne. the only reason I had to leave there was that my apartment had flooded and my landlord raised my rent higher than I could afford. but know I am wonting to be on my own again, but this time I will be with my best friend. in a 2bedroom apartment in downtown Beatrice, Ne. So I was hoping that you can help us with this because we have tried everything we can think of and now you are hope.