Trouble matching colors on face between two cameras - Canon R5 and C70

There are probably about a million color correction tutorials out there for sure, https://www.youtube.com/results?search_query=how+to+color+correct+to+match+shots But have you tried the auto match feature of Premiere? It's a simple as clicking on your clip you want to change, then go into the the lumetri panel, go to colors and match, click on "comparison view", pick a different part of your sequence in the comparison view and then hit apply match and see how it does. It could be very easy. It doesn't look like things are too different. The R5 is warmer and darker for the most part. Cool it and brighten it and I bet it would get really close.