Those pedals may have a plastic cap on the outer end. It may not be evident. You may have to skewer anything that looks round and rotate/pull. If you can, take them apart and clean/grease. (Be careful, there are about 30 1/8" bearings that will fall out.).

That will give you some decent backup pedals. I did this with my Schwinn Avenue and Trailway (Walmart and Target, respectively). They've held up very nicely. Initially, they were overtightened. Grumbly and felt like they would "index" into set positions. After rebuilding, very smooth.

Probably a poor expenditure of time. Replacement resin pedals are about $8. But, an "I did that" feeling is worth something.