British citizenship/ Indefinite Leave to Remain (London)

Is there an immigration lawyer here or UK immigration expert who can give a clear account on what is happening to those EU/EEA people living in the UK that apply for British passport/British citizenship/ Indefinite Leave to Remain ? Any insider tip and tricks on how to be successful in getting one of those Permanent residence cards if you're a full-time student at a UK Russel Group University and have lived in the UK for 6 years but don't have much paperwork or so called evidence except some bank statements dating back from Protected content ? How about volunteer work,will Home Office count volunteer work as work experience? What are the things that could hurt the success of an application for British citizenship/ Indefinite Leave to Remain?Is Home Office UK done with racial bias or it's still going on? Thank you.