A Private Issue
Brian May also said that the band really did believe that the meaning of a lyric was a private issue for the composer. So the meaning would be up for debate and left for speculation among listeners. Many people figured that Mercury’s lyrics must reflect upon his personal life.
Source: bbc.co.uk
Sheila Whiteley (a music scholar) analyzed Freddie’s lyrics and believed that he reached a turning point in his personal life when he wrote “Bohemian Rhapsody.” With everything that happened between him and Mary and then starting his first love affair with a man.