Prius 2007 p0300, p0301, p0302

While driving today, got the red triangle and all other warning signs on dash 3, plugged in my obd card reader, and got the following error messages

 

Has anyone had these faults and how to fix them, car is 2007 prius with 185000 miles

 

185000 miles on the car, had the car for 6 years, regularly serviced but never changed the spark plugs

 

Yesterday I drove it with all the errors, but today when I started it and tried to put in drive mode, would give the following error

 

I took it to a mechanic, he said looks like a spark plugs issue, or maybe ignition coil, replaced spark plugs (old ones were really bad).
Mechanic did not remove the codes and the errors were still showing, thought will clear them myself with the mini obd scanner but it won't connect, called RAC breakdown and their system failed to connect as well, any idea why it is not connecting, issue started after the plugs were replaced.

Also car is driving but feels heavy and ABS light came on as well.

As suggested will check for battery corrosion (recently changed only few months ago) and will top up coolant as well