Rights of tenant

Facts of the case: a) Party X and family are tenants in a residential property R for 60+ years b) Party X started their tenancy with Party B c) Party B was not the actual owner and R was "gifted" to B by Party A, without any registered gift deed. d) B kept on collecting the rent from X in the meantime e) Party A later filed a title suit in the district court and won f) The rent is being collected by A since then g) It is a rumor that B has filed an appeal in the High Court h) X has incurred all the maintenance expenses all throughout this period i) X is willing to purchase the property or vacate the property after being compensated. j) Neither the owner nor the tenant has shown any interest so far in settling down the matter k) B still looks to occupy the property but has never approached X with an offer. What are the steps that can be taken by X to break the deadlock and proceed further? If there has been no appeal in the high court, can B come up with any other legal action? If there is any appeal filed in the High Court, what are the remedies available with X to settle down the matter? Thanks in Advance