Going umrah without a Mahram

I and my mother want to go umrah at the end of this month, the problem is we don’t have a mahram.. my father has passed away and i have no brother.. my uncle (brother of my mom) isn’t financially well off..

I know that KSA govt has permitted for women to do Umrah without a mahram.. but I have got doubt in my mind.. searched online and everywhere i found that it is not permissible for muslim women to do umrah without a mahram.

I want to know from the credible source, is there any space in religion for us to do Umrah. We really want to visit there and pray. But i do not want to go wrongful and receive Almighty’s wrath instead of His pleasure. Is there any permissibility to go as a group.

Thanks.