Export Looks and Sounds Terrible - Help Please?

Hey, I downloaded the trial to Studio in the hopes of getting into animation. I want to upload my latest short to YouTube, but I can’t for the life of me figure out what export settings to use. It seems like no matter what settings I use, the video is washed out and blurry, and the sound pops and crackles for the entire duration of the video. I don’t know what’s causing these problems, so any advice from a more seasoned expert is greatly appreciated!

The trial version obviously has the limitation for the export in resolution size and the watermarks since it was designed for trials. I think it was written on trial download page. However, the sound issue is quite interesting that it might related to the original sound or the sound setting. Check the sound setting in export as stereo with high rates also try using uncompressed sound such as WAV.