You should only buy running shoes from a sports shop that offers either ...
... "gait analysis" or
... "treadmill fitting"
You don't pay any extra for your shoes, but you will get comfortable shoes.
And, more importantly, shoes that will not stress your ankles or knees.
When you run, your foot will fall, roll and push in one of 3 ways ...
"pronate" (very common)
"neutral" (eg Me!)
"supinate" or "under-pronate"
Running shoes have sole, heel and arch supports, and tread patterns, to correspond with each type of gait.
The problem is ... how do you match your gait, and the right shoe?
A lot of soprts shops just buy 'em and sell 'em.
A good sports shop will ask you to stand, squat, walk down the shop with no shoes on, and walk on a treadmill.
That will tell the shop assistant if you are a pronator, a neutral, or a supinator.
The shop will then tell you which of the shoes in the shop are suitable for you.
ONLY THEN do you try them on and see which feel comfortable.
If you don't do this, then running on a treadmill will harm your feet.
eg. If you are a supinator, and you buy shoes made for a pronator ... every time you run a step, the sole of the shoe is pushing your foot onto its side, and you have to compensate by pulling your foot straight. Have you ever had "tired feet" ? Well, that's why it happens!
ALL the manufacturers make running shoes for ALL the gaits.
Just make sure you find the right ones.
And, as I said ... you're not paying extra, or buying more expensive shoes ... you're just making sure you fing the right shoes for you.