Usually when fish are flashing against substrate, plants or rocks it is a sign of an external problem. Gill flukes, ich etc. I have little or no experience in fish meds and cannot recommend much of anything for you.
You fish will do fine once your pH gets down from the 8.0 Like I said before, I targeted 5.5 for pH and it seems to have settled in now. I got the fish from Wet Spot. Ordered them the day that they rec’d them from the shipper and they are doing well. If they had them for months I would not have ordered.
Get your tank and it’s parameters stable then treat the fish. If they are going “downhill” then treat them asap. to save them, it is all a risk with disease and meds.