no
Gandalf believes in Bilbo, and he says in the book that he wouldn't of brought-en him if he wasn't in good use.
Frodo knows Gandalf because Gandalf was like Bilbo (Frodo's grand-uncle) guardian on Bilbo's adventures. Now, Frodo knows Gandalf through Bilbo.
I believe it was when Gandalf was leaving the group at the edge of Mirkwood.
In The Hobbit, protagonist Bilbo Baggins returns to his home The Shire by himself.
Lady Lorien saw the dwarfs and bilbo leaving, Gandalf knew that they thought he would slow them down so they left without him. Lady Lorien was referring to the fact that the dwarfs wanted to leave without gandalf.
Thorin Oakenshield, or Gandalf, depending on your perspective.
They take weapons, Gandalf and Thorin get their elven made swards and Bilbo finds his sword Sting. They also take the gold and silver the trolls had stolen and buried it, later on the return trip Bilbo and Gandalf retrieve it.
Bilbo Baggins
Gandalf.
Gandalf surprised Bilbo and he was foreshadowing the future
Gandalf noticed the ring turning Bilbo crazy so he forced him to give it up and leave it behind
the person who praised bilbo was Gandalf.