Share 'Freeview - can anyone help? Idiot guide needed'

Hi, I have this TV - Hisense 50 Inch H50B7300UK Smart 4K HDR LED TV I have absolutely no idea how to set up a Freeview on it - menu comes up but when I select any channels nothing happens, just a grey screen. Few idiot questions (apologies, laugh all you like but please help if you can) I live in a conversion, 3 flats, no communal aearial or communal dish and landlord (L&Q) refuses to install…