10 year old bad attitude

[Whenitgothard]

My 10 year old dd is being really hard work and I’m not sure how I am going to manage. I split with my exh (her dad) 3 years ago and she blames me and takes it out on my dp.
She has an attitude that knows best with everything and doesn’t follow the house rules. There are 3 other children with us full time very similar ages.
She’s depressed because she thinks I hate her and all I seem to do is tell her off and her dad doesn’t make much effort to see her or her younger brother
She does what she likes when we are not in the same room and has no respect for anyone. She’s become spoilt and wants everything
I’m at my wits end and I don’t know what to do.

[BunnyRuddington]

Just interested in what you do to discipline the bad behaviour?

I know it's difficult with others i the house and lockdown but can you spend some time alone with her even if it's just going for a walk or getting a McDonalds and eating it together?