Hard to tell. You could have a parasitic draw somewhere... eg. trunk light, vanity light stays on, cheap Chinese USB cigarette adapter shorted internally. Or your alternator is not charging your battery effectively.
One thing to be mindful of that you can control. Anytime you need to jump start your car you MUST charge the battery as soon as you can. Battery's at very low charge sulfates and you'll end up having to buy another one. Easiest way to get it out of the danger sulfation level is to drive it on the freeway at speed for at least an hour or even 45 minutes. It doesn't have to be continuous, 22 to 30 mins one way then back is fine. That won't be enough to fully charge the battery which I recommend doing, but that is best done with a battery charger... or actually a long trip.

Once you get home, check it's acid levels and top it off with distilled water. If the acid level is below the top of the plates, it's too late.
After you get it out of the danger zone, best thing to do is to go to an auto parts store or your local mechanic and have them test the battery/alternator. Best of luck.