Lovely to capture this early morning sun reflecting on the lake. There are a couple of issues to help you, if of course you don't mind? The glaringly obvious thing is the horizon (edge of the lake) is leaning to the right and needs straightening. The other issue is that the reflection is really burnt out. That means no detail. You would expect this with the sun, but not a big swath of reflection. Before I add anything else, you have moved over to a good full frame camera, but are you shooting in RAW or jpeg? What mode are you shooting in (AP - Aperture Priority; TV - Shutter Priority or Manual), or are you using the other controls? What software are you using for post production? We all start at the beginning, so don't be disheartened!
@marshwader I try to use the MarkIV more these days but still like my T7 to carry around when not using a tripod. Most of my shots are in manual raw. The software editing is still my Microsoft version and I have downloaded Gimp to learn at some point but find it overwhelming so it might take a while :-) Thank you