Native speakers using Phrasal Verbs very frequently, because it can express a lot of meanings.
but
Is there any rule that I can follow to construct acceptable phrasal verbs?
Native speakers using Phrasal Verbs very frequently, because it can express a lot of meanings.
but
Is there any rule that I can follow to construct acceptable phrasal verbs?
We don't, they evolve from normal uses of verbs with prepositions or adverbs becoming more specialised or generalised in use until they acquire a meaning that isn't quite the same as before and are then learn the same way that individual words are learnt.
Run into in the sense of "encounter" started as a metaphor of actually running and this running bringing the subject into something. It's only with the metaphor becoming a dead metaphor where we no longer think as much of the imagery the metaphor had been using that it became a phrasal verb.
It wasn't constructed as a phrasal verb, and we learn its meaning the same way we learn the meaning of a word.