New gal from UT here! Need some help.
Welcome to the wonderful world of A body ownership. It appears that your new car has been kept in decent shape, and I agree with the above comments as well. Take your projects one at a time, and I would start with the electrical. My advise would be to start with the free stuff first…..
It sounds like you have a charging issue, that would point me to the alternator, and grounds. Take the cables off the battery, then go around the car and take off the ground wires one at a time, clean them with a wire brush, and reinstall them. Them go around and do the positive wires and do the same. Most times these gremlins are being caused by dirty or rusty connections. Do one at a time so you don’t get too deep in the hole and have everything taken apart. Take the alternator off and take it up to your local auto parts store and have them test it. If something has a terminal where the wire slides on, take off the wire, clean the terminal, inspect the wire and end terminal, and slide the wire back on and off a couple times. You can also spray a small list of terminal cleaner into the plug in end.
There is a terminal block called the bulkhead where a lot of the wires go from the engine bay into the interior, it’s right around the steering column on the firewall. These have lots of terminals in each plug, and are known for their finicky connections. Use a small screwdriver to slightly lift the safety clip from one side and pull each plug off. Spray some terminal cleaner in each side and slide those on and off a couple times too.
Welcome again, and don’t get discouraged when working on your car, it’s a fun hobby full of trouble shooting and sleuthing sometimes, but the rewards of driving and enjoying the car are well worth it.