All you need is your Eyes, Heart and Soul
Not a fan of tons of gear, Marius Vieth currently uses a Fujifilm X-T1 with a XF18mm f2 R lens for his classic street photography signature and for his broken signature he uses a Canon 5D Mk II with a broken Canon 24mm f1.4 lens.
He believes that in order to find out which lens will suit you best, simply use what you’ve got, taking lots of street photos and see if the lens helps you express yourself or not. Originally, Marius started off with a 50mm but after a while realised that he loved the surroundings of the subject just as much as the subject itself so he swapped his 50mm for a 35mm. In order to have even bigger sceneries, he decided to buy a 24mm lens.
Continuing to say that it’s okay to try out all sorts of lenses and cameras but to never forget that “your most important gear is your eye, heart and soul!”