Frequent dead battery
With the limited info you gave I will leave you with this…
Look for light bulbs remaining on when car is off and parked. Common culprits: Brake lights, glove compartment light, interior lights, trunk light, engine compartment light. Beyond that, you’ll need to hire a shop for battery/charging/phantom current tests.
If you have AAA the on-sight technician can do a basic diagnosis as part of your membership fee. AAA also sells replacement batteries if yours is below a certain level of health.
Also: Any aftermarket electrical device(s) installed? Evidence of the vehicle being in a flood?
Driving habits? Lots of short trips that aren’t long enough to keep the battery charged? Does the car sit unused for long periods of time?