Response: Yes, you can install rear axle tensioners on the rear bolts.
Cheap type: https://www.aliexpress.com/item/2251832780835077.html
Better type: https://www.amazon.com/Origin8-Chain-Tension-Adjuster-Black/dp/B001GPJY1O/
Take off the rear nuts, install the tensioners between the threads and the nuts. Tighten the tensioner so that the chain has reasonable tension. Then screw the rear axle nuts back on. The tensions hold the wheel against the frame so it can't slide forward.