Speed Control Cable problems of the 2018 Jeep Renegade

A few weeks after I first bought my new car (June 2018) after starting it, the radio would sometimes not come on or the volume control knob would not work. Then recently several months ago (April 2020) the 12v cigarette lighter in my car stopped working (car in park, just started). Turned car off, and then it would not start again. It seemed like all power was lost to the car. No lights would come on inside either. It just wouldn't do anything at all when trying to start it. The 15 fuse was replaced in the dash box, and it then started fine again. That lasted for a couple months. Then a few weeks ago now (8/8/20) my car wouldn't start in the driveway. Again, no power to it, no lights or anything. The same fuse was blown, so it was replaced again. My car still wouldn't start. I jumped it off with jumper cables, it started fine. I was driving for less than 20 minutes (8/12/20), someone motioned me to pull over because they smelled my car battery. Looked under the hood, and my battery was leaking. I then had to drive my car another 5-10 minutes to get it home. Made it home, and the car wouldn't start again. I had the battery replaced with a brand new one (8/17/20), and my car started fine again. As I mentioned, that was 2 weeks ago. Now today (9/2/20), I started my car, drove for about 5 minutes, then it just quit accelerating and wouldn't go over 20mph. I pulled over, the check engine light came on for the first time, turned the car off, and again it now won't start back up at all. The interior lights do still come on, but when I hit �lock� on my key fob, the headlights and taillights flash weirdly on and off many times in a row. I bought this car brand new and have only had constant electrical and starting problems since the beginning.