We can only increase the value of a cryptocurrency that actually has a worth,
no meyt . cant you see that even sh*t coins and pump/dump coins also increase ? thats because they are being manipulated . unworthy coins can still increase and grow as much as a valueable crypto .
You cant really do much to increase the price of a certain cryptocurrency since the creator of that coin has to do that by promoting and marketing his coin
your right , the creator of the coin must do advertising in order for thier coin to get discovered but you can do anything to help the coin grow by buying or investing on it .