No. Not even close. We’ll lose two (Gardner, McSally) gain one (Jones) for a net final of 52-48 (minute Minion) really leaves us 51-49 majority with Pence breaking ties.
We’re fine.
I'm not as confident as you are. Folks are really, really disgusted with the way Republicans, particularly US Senators, are not even hiding that they're part of the coup. If they're not going to defend President Trump, he can't govern effectively. What's the point of voting for traitors?