There is no way out for escape loss while trading, its hard to say that you can surely be able to profit from any altcoin trading . Sometimes some hype / rumour about bitcoin can bring some bucks but that can be called escape loss from altcoin . Different peoples have Different trading strategy for their altcoin trading , AS a reason an altcoin trader bitcoin is the mother of all altcoin ,so reason behind converting their profit to the bitcoin is so obvious . Always do your research before investing .
I do agree with your first line, there is obviously no way out to stay out of loss completely as a trader. But if you focus on what strategy works for you and maintain it, you will be winning most of your trades but that's if you are good with technical analysis. My strategy for trading alts is this; i donot aim for too big profit, i set stop loss for all trades, i do not use big funds for leverage trading, i convert to USDT when i analyze and think the market will dump, i hold a bulk of my portfolio in Bitcoin without trading it.