Trifecta = 3 branches of government. Executive, Judicial, and Legislative. It makes no more sense to break Congress up into two branches than it would to break the Executive branch up by all KF the various agencies under the president.

It was the Supreme Court that decided to overturn Row vs Wade during Biden's term. It was the Supreme Court that decided to strike down his executive order forgiving federal student loans. Essentially the same Supreme Court that decided to hand Trump a blank note saying "do what you want" stymied the Biden administration repeatedly.

Claiming that the majority in the Senate matters for anything other than the annual reconciliation bill shows how little you know about how the Senate works. A majority does not give effective control in either chamber, though the Democrats did have the numbers to control the House. Even the "50" you claim has to include independent senators who caucased with the Democrats, not actual registered Democrats, to get there.

So like, if you just want to spread Republican propaganda about how bad the Democrats are in an attempt to get their voters to stay home on election day, you can go ahead and say stuff like that. You're spreading lies that help conservatives.

If you want to do an actual good-faith evaluation of when the Democrats have had the power necessary to do anything, you can look back through history and find that the only period of time they have had that control in the last 50 years was when they passed the ACA, and that was only for a few months, not a full two years.