NHTSA Complaint #11473292 — 2018 FORD EDGE

I've bought a 2018 Ford Edge SEL July of 2021 at Zech Ford (Kansas), it had just a little over 50k miles, within the first month of ownership, engine light comes on (code P0301), I took to the dealership and they replaced the oxygen sensor, everything seemed fine since. This last May, the flex plate cracked, I took to Greenway Ford dealership (Florida) and paid $3,085.36 for the repair, within just an hour of having the car back, engine light comes on (P0301), I immediately took the car back, they kept the car for the weekend, replaced the stream O2 sensor and charged me $105.24, they only charged me for the part, they waived the labor fee since I just had a $3k repair. Now, 2 months later, engine light comes on again for the same code P0301, but this time I can hear liquid running through the dashboard and a lot of white smoke coming out of the exhausts, I popped the hood and see that the coolant container is virtually empty, so I’ve bought some and added to it, I took it back to Greenway Ford, left the car there and couple hours later they called me to let me know that the coolant leaked into the cylinder and tells me that my only option is to have the engine replaced at a cost of $8400! This is my only car, I still owe $22,700 and I do not have $8k to get it repaired! And the car has about 94k miles now,