The 50/30/20 split
About 50% of take-home pay for needs, 30% for wants and 20% for savings and extra debt payments. It's a rule of thumb, not a test you pass or fail.
Sorting the gray areas
Basic groceries are a need; restaurant meals are a want. A phone is a need; the newest model is a want. Minimum debt payments are needs; anything extra counts as savings.
If needs are over 50%
That's common where housing is expensive. Many people run 60/20/20 for a while. The goal is to see the gap and close it over time.
Do this today
Put last month's categories into needs, wants and savings and work out each one's percentage of your income.