Transmission Gear Slipping problems of the 2013 Hyundai Sonata

My 2013 Hyundai Sonata issues: 1. My horn & left side of my steering wheel buttons doesn't work. I was told it could be related to fuses or clockspring replacement. Trip a/b and other buttons doesn't work , I've been driving for over a year without a horn because this isn't a recall. This is a huge safety issue. 2. My gears are start to slip in the transmission. I was told it could be two things it's either the transmission or speed quality censor. These cars were made either very fast or very poorly or both and this is another safety issue. 3. Electrical issues. I have to manually adjust by back light/break lights daily because they never stay in place. The whole wiring for this vehicle is horrible. Sometimes while driving the car suddenly starts to slow down. Every once in a while my radio is on but doesn't light up. Light bulbs are melting into light sockets. Electrical issues that are a safety issue for many with these model cars. Eitherway none of these issues were a problem until after Hyundai performed all of the recalls on my vehicle. They charge $200 for a diagnostic that I'm not willing to pay , theses issues came from the makers of this vehicle, these should also be added to the recall list. I'm sure if you look around online there's others who's dealing with these issue from 2013 - 2021 today. I don't think it's fair that I purchased a vehicle and have to come out of pocket for all of these repairs that should have been repaired from the beginning. These are safety issues that should be taken more serious. I've almost got into multiple accidents because my horn doesn't work. My vehicle worked fined before all of the previous recall repairs. My transmission slipping left me in the middle of nowhere until my car started functioning properly to get home. The electrical on this car is costing me money non stop. Hyundai needs to fix this! 2.