The number 180 steps per minute is widely quoted as the ideal cadence. It comes from observations of elite runners at race pace, not from a rule that applies to everyone at every speed.
Cadence naturally rises with speed; most runners take fewer steps at easy pace than at race pace
Taller runners and those with longer legs often have lower cadence without any problem
Research suggests that increasing cadence by about 5-10% can reduce loading at the knee and hip, which may help some runners with certain overuse problems
Large forced changes can make running feel awkward and may not improve economy; small adjustments are the norm
If you want to try a change: measure your current cadence on an easy run, say 162 steps per minute. Aim for about 5% higher, around 170, using a metronome app for a few minutes at a time within easy runs. Give it several weeks before judging how it feels.