How to find a player

How do I find a chess.com player by username?

At the top of this page, put your pointer on "Share", and click "Members" in the box;)

Next, on right hand side, use magnifying glass search tool and, if necessary, narrow down search by country. 

I need a strong opponent my username is KrisM609

i really like this app. i have taken a few lessons and tonight i decided to play live opponents. both of the opponents i played blatantly disconnected continuously to consult chess engines. whats the point of that. shouldn't they be disqualified as soon they disconnect and reconnect a couple of minutes later. its a disgrace. how can i get a fair game?

Lol old comments

Are you sure they were disconnecting to consult the chess engine? Do you have evidence? It could be that they simply had bad connection. Furthermore, you said they connected a few minute later. You could try playing games with a shorter amount of time on the clock. That wouldn't give your opponents time to do anything else but play fairly.
Just so you know, when you have a problem, you can report the person. Here is how you do that: https://support.chess.com/article/209-how-do-i-report-someone

yes

i would like to choose my own players for challenges

How can I find the name of player by him match ?

I have a picture of one of his matches ,but I don't know his name

How to find the fide profile of a player by his username?

You can only find that if they have their real name on their profile.