Not too sound presumptuous (i don't know you or your mechanical ability), but you can't fix this yourself easily. I would suggest taking the car to a suspension and alignment specialist that can align the car properly (not going off factory specs for an incorrect model) and if the alignment can't compensate they should be able to recommend a product to correct it.

Rather than arm you with enough info to be dangerous, i'd say that your caster is wrong and your toe settings are wrong. Go to a shop and tell them that the last aligner left your car like this and you would like it fixed.

As mentioned earlier keep your tyre pressures higher, it will keep the tyre on the road properly and the side walls won't flex as much causing vague steering and tram-lining