Which connection? So far as I understand it there was no definitional collusion between Trump and Russia specifically but I don't know about Assange.
That depends on who you ask. For some reason his supporters feel that way, and his detractors would beg to differ.
Being that we are now in an era of "fake news", its up to the willingness of the individual to entertain the evidence that's been presented.
Bullshit. I've detracted Trump since I learned of his existence in the mid-80s. I would never vote for him for any office. I would not change the channel to hear him say something. He is a worse human than he is a President, and that's a very low bar indeed.
Still, the idea that he and any Russians worked together on his election has been extensively investigated, and no evidence to that effect has ever been made public. Confused people will cite the "Mueller" report, but those documents also contain no evidence to that effect. If there were something there, we would have seen it by now.