phrases: to have trouble with, at least

I’m not sure if the sentences below are correct english. Please correct them if neccessary. thanks!
I have trouble with my parents.
I got in trouble with him.

at least
I am at least on the third place. (in a race for example)

The first two are correct.

The 3rd isnt, It would be “I am at least third place”, or “I am at least third”.

In the US, we’d say “in third place” not “at first place.”