Does Anyone have Proof Of Russia, Trump Collusion?

Months and months of allegations.  A full blown senate testimony from former FBI Director.  And an impending Special Council.  Yet I haven't seen a shred of real proof, have i missed it?

The Lefts entire argument for months now has been that President Trump colluded with forces inside the Russian government to help secure him a presidential victory.  But them simply saying does not make it true.  We have since heard testimony from former FBI Director Comey sitting President Trump was never under investigation.  We learned Comey was fired not to silence the investigation into these allegations, but because he would not dispel them even though no evidence showed them to be true.

A full testimoney in Washington proving only that Trump was never under investigation.  If the Left wants to continue this hunt can someone, anyone please show us some proof?