Show me any evidence of Trump colluding with Russia.
There is no such publically available evidence. There is plenty of evidence that his family and campaign workers had an astounding number of suspicious contacts with Russians, some of which were almost certainly illegal.
The investigation isn't finished, and what we do know indicates it must continue.
We have seen far less evidence than Mueller has.
If Trump is innocent, so be it. If he's guilty, so be it. As of now nobody outside the investigation has anything resembling the full story and should not be claiming to know.