I've seen a lot of complaints about the clock position after the Pie update. I personally don't mind it but Samsung just pushed updates for Good Lock and its compatible apps one of which is the Quick Panel Star. If you open up the Quick Panel Star you'll be greeted with setting for the Quick Panel pull down as well as settings for the clock position!
I moved mine to the center which is very visually appealing for me.
There are also a lot more setting you can tweak for things that may have been changed with the Pie update but I noticed the Clock Position being a huge complaint in the forums and didn't see anyone mention this yet so I thought I'd cover it. Highly recommend going through all the Good Lock software to see what else you can tweak to your desire!