WordPress Interface Help

I just installed WordPress on a new site and the interface is off-putting. You can see an image here:
https://www.my-health-and-fitness.com/wp-content/uploads/2024/05/New-Style-Interface-scaled.jpg

I want it to look like the old style interface, seen here:

https://www.my-health-and-fitness.com/wp-content/uploads/2024/05/Old-Style-Interface-scaled.jpg

As you can see, in the old style the title text goes in the editing box, and the left hand sidebar isn't collapsed. I...

WordPress Interface Help