malfunction light on and pulls bad to right after changed flat and rotated tires

What is your question?

i had a tire shop mount the tire on the rim and i put it on myself, about month ago i had a tire go bad so its been changed and no issues, this time i bought two tires and so i rotated them, putting the two new ones in the back ( the one changed a month ago was in back and now its in front. the two in back are same name brand, the two in front are different, making it 3 different brands all together and before this tire changing rotating issue the car drove perfectly staight