Some coins caused me big losses. I am very sad about this. Unfortunately, most alternative coins turn out to be rubbish.
Do not worry about that, and try to look for more appropriate altcoins. Maybe today's market is boring, but there is always a opportuinty to gain.
Just do deeper research.
Not deeper research. Do a smarter research. Usecase is important, team experience is important, community response is important. Don't be fooled by flashy websites and whitepaper.