Not sure what you exactly mean.
Invest in projects with a solid roadmap, excellent team and a community and you will be fine.
If you throw money are pump and dump copycat shit coins you will loose in the long term
In fact you should just make sure that you'll invested on some existing project that proves that your money wouldn't be wasted. Some alts are just focusing on giving up value with their coin and don't even care about their project to continue in short it was all just imaginary that's why don't be surprised why those alts are all dead now.
for holding is indeed dangerous for all Altcoin used. I would recommend some to keep the income and storage balanced. with over time, we need to generate profits large enough to produce its own wealth in order to achieve much greater profits. and I recommend using Altcoin as best as possible and as efficiently as possible.