Luke did not train between movies, because he would have been back on Dagobah, but he wasn’t.
He doesn’t train with Yoda, it doesn’t mean he didn’t train at all. Pretty sure Yoda’s training wasn’t about choking people or using mind tricks 😉
(has he found that in the jedi books we later see in TLJ ? Or a Sith holocron he got somewhere ? Who knows…)
Why wouldn’t he go back to Yoda, and train on his own for a year or more instead? Makes no sense.
Pretty sure? Why?
And even if Yoda doesn’t teach the mind trick, than maybe Obi-wan? He used it several times.
Pretty sure that it is much more difficult to learn anything on your own, than with help.
There is no idication that choking people is some special skill, that Jedi can’t learn, or it is forbidden to learn, more like just something the Jedi don’t use.
He has time to look for holocrons and whatnot, or going on adventures that he has actually a chance to stumble into one, but has no time to fly back to Dagobah, when the most important thing to do is free Han and learn to become a Jedi?
Makes no sense.