ANSWER:

It’s not permissible to travel without your mahram because Prophet ﷺ forbade this & said a woman who believes in Allah and the day of judgement must not travel without her male mahram 

If you are living in Makkah or Jeddah then no problem in making umrah without your mahram since this is not a traveling distance 

QUESTION: My father is deceased and i have no brother of my own, my remaining mehrams ( 3 brothers of my father) they are not willing to go to umrah with me. in this situation, can i perform umrah on my own? or with a female companion? and will my umrah will be accepted?