This here! Also simply looking at modern relatives; things like deinosuchus probably looked really similar if not basically identical (outside of being much bigger) to modern crocodilians.

Still some interpretation to be had, sure, but we can apply what current birds look like to smaller raptors (microraptor, velociraptor, etc) given they were getting close to modern avians along with cues from the fossils as mentioned above.

I see a picture floating around sometimes of a swan shrink wrapped with no feathers and using its featherless wing as a stabbing implement and people believe it. And some other animals given similar treatment. No. Just, no. We aren't as off as we were, where we had tons of dinos standing upright...