Laravel: Proper way to use Where and orWhere in query -

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There is currently a query running in Laravel but the expected output is not correct. Therefore, it seems that I still do not know the proper way to use where / or somewhere I have these two questions below;

QUERY 1 (A) 

  // Total Friend $ user = Friend :: Select ('friend_sender (' Friend_receiver ') - Where ('friend_sender', input :: get ("user_id")) - gt; or where ('friend_receiver', input :: find ("user_id")) -> ('friendship_status', 'Friends') - & gt; Count ();

QUERY 1 (b) 

  // Total Friends $ User = Friend :: Select ('friend_sender', '(' Friend_receiver ') -> where (' friendship_status', 'friends') -> where (' friend_sender ', get input :: ("user_id ")) - or (where 'friend_receiver', input :: get (" user_id ")) - & gt; count ();  
 
 These two questions produce different results.  QUERY 1 (a)  result is  0 , which is true in my own example and  QUERY 1 (b)  result  1  that is wrong. 
 
 Now, I think that  WHEREs  is  WHERE / orWHERE  must come after the statement. I have written another question but not found the necessary results. 
 
  $ user = Friend :: Select ('friend_sender', 'friend_receiver') - & gt; Where ('friend_sender', get input :: ("user_id")) - & gt; Or where (where '(friend_receiver'), input :: find ("user_id")) - & gt; Where ('sender_follow', 'yes') - gt; Or where ('receiver_follow', 'yes') - & gt; Where ('friendship_status', 'friend') - & gt; Count ();  
 
 My question is, how do I use  WHERE / orWHERE  properly?

View this example from: 

  DB :: table ('Users') - & gt; Where ('name', '=', 'john') - & gt; Or where (function ($ query) {$ query-> where ('vote', '& gt;', 100) -> where ('title', '

The closure will say: and before, again or the situation.


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