The influence of bitcoin on altcoins is inevitable given that, it remains the pioneer coin and that creates a sentiment about it that sort of operates the cryptospace by influencing the decision of investors. Some coins have been known to stray the path like Repo in 2019 when it did some bullish move that created a high at about $0.7. Surely this wanst going to be a trend, to move in opposite direction with bitcoin and as such, it dropped to about $0.3 where its been found to struggle getting back up ever since.
That's the point when you don't get to trust altcoins. When it dips, it gets really difficult to get back up and in the event that it pushes up, it's often about waking the trend along with bitcoin. Bitcoin really this influences altcoins in time.