Because your coins is bullshit too,that is why there are no improvements,HOLDING good altcoins and tokens will give you a lot of profits but holding these shitcoins which doesnt have good working product/services wont give you anything even you waited hundreds of years.Do a lot of research find new potential coins or projects only invest to good projects,read whitepaper check the team,the current developments and im sure your holdings will give you much better outcome.
Yes, dont wanna be rude at all but thats the truth. Your coins really are bullshit. Always do research and analysis before investing in any of the coins in market, also check whether the coin is listed on market cap or not. Whitepaper must be read as they reveal quite much about the project also check what people are working on that coin and whether they are transparent or anonymous. I would most probably recommend investing just in those coin that make the top 30 list of the coin market cap.
The coin you are thinking about investing in must atleast be present on the coin market cap. Also follow the twitter page and join telegram group of the project or coin in which you are investing you money, so you remain updated about every move and know when is the time to buy and time to sell.