LOOKING SOMEONE KINDLY FOR IMMEADIATE ADVICE ME

My Tier 5 charity work permit was withdrawn by my employer on 29 / 11 / 2017, when she noticed I was trying to get a part time job during my holidays this december .now I don't know how long am supposed to be here in uk and is it possible to use a lawyer to help stay here.please help

I have been in U.K for two years this is my third year. and my current charity permit expires on 2 / 08 / 2018

I was working with people with special needs and learning disabilities as a volunteer

I was also offered the National insurance number ( NI )last week in which I want to apply job as it allows 20hrs working paid work is it illegal

Also I want to apply DBS can this affect my DBS results

Also if an agency gives a job contract in healthcare can this help


Please advice me