The market price as of now is very unstable. The price of the altcoins keeps going down. May I ask an advice, is it okay to dump all my altcoins and exchange it in tether to prevent my profit from going down? Is it the right thing to do?
no in my opinion.
Learn the development of coins you have. if it is still good, I recommend hodl because currently the market conditions are very reasonable. if one day there is green of course red will replace it.
crypto world is currently having a very significant interest. but unfortunately, many communities only think about pricing, supply and demand only. without really doing full support for the project. so it can also affect the token's unworthiness.