The new outlook
It's too much for me. I like simplicity and less, so I prefer the old look. This one is harder to tell what's read or not. I don't like how the attachments make the email cell's larger.
First off, Thanks for taking sometime to try the new experience and for providing feedback.
You mention that things feel a bit too cluttered on a laptop.
Can you try disabling these two settings and see if it feels better.
Click the Gear in the top right, and then disable Sender Photos and Attachment Previews.
Hope this helps!