Those four screws should do it. Not exactly an expensive marvel of engineering, just plastic screwed directly into aluminum. Even if it isn't completely symmetrical, you should be able to rotate it 180 degrees.
As long as thermal paste is still liquid, you could also just stick it back down immediately with little risk. Maybe push it all into the center again with a credit card or piece of hard plastic. Not best practice, but should work.
That or take the opportunity since you would have to pay for shipping a tube of thermal paste anyway to order yourself a better heatsink.
Ryzen 2200G isn't a powerhouse of a CPU though, so the stock cooler is really fine.