Usually this "weird" feeling is because the pedal axle is slightly bent.
These are fairly low end pedals.
Replacing them is not expensive.
Taking it to a local bike shop to buy pedals won't cost much, but learning first hand from a [https://www.youtube.com/channel/UCZ_NRb0SUJO8vj68_xaiYTA/videos?shelf_id=0&view=0&sort=dd|mechanic] will be an eye opener. And could save you money down the road.