come across :

1. (transitive, no passive) (come across stg/sby) to meet, find, or discover, esp. by chance.

"She came across some old letters in the course of her search"

“I came across an old diary in her desk.”
“I've never come across anyone quite like her before.”

2. if an idea comes across well, it is easy for people to understand.

“Your point really came across at the meeting.”

3. if someone comes across in a particular way, they seem to have particular qualities. [= come over]