No, the party only had two real candidates that year, Hillary and Bernie the socialist, and Bernie was never supposed to do as well as he did. He was supposed to be an "also ran" to create contrast for Hillary's moderate views for the GE.
Hillary was a deeply flawed and disliked candidate that was going to be polarizing, and the party cleared the way of any meaningful opposition.
The party gambled on all in on her and lost.
Very few were actually excited for her, but voted least bad option.
Really, the only reason the SC is even 6-3 is bc Trump was historically incompetent, else a more traditional R would have likely won reelection and we'd be looking at a youthful 7-2 court, and possibly Thomas retiring to cement any chance in decades to make changes.
Stop making excuses for a poorly run party that can't deliver even when given the majority vote.