Car battery keeps draining, could it be alternator issue?

Hi, I’m a bit confused about what’s going on with my car and hoping someone here can help me make sense of it. For the past week or so I’ve noticed my car starts fine in the morning, but if I drive around during the day and stop for a short break, sometimes it struggles to start again or feels like the battery is weaker than it should be. At first I thought it was just an old battery, but even after a small recharge the problem came back, which made me think it might be something deeper in the charging system. While trying to understand what could be wrong, I ended up reading about https://www.carbatteryreplacementsharjah.ae/car-alternator-dynamo and it got me wondering if the alternator could be the real issue instead of the battery itself. I don’t really have much experience with this kind of repair, so I’m not sure what signs clearly point to alternator trouble versus just a weak battery. Has anyone here gone through something similar and figured out the real cause before replacing parts? I’m just trying to avoid spending money on the wrong fix and still ending up with the same issue later on.