It's very possible. I do expect the GOP to retake the House in 2022. At least the early indications point to that. The senate, I'm not sure. But there's a year to go.
I agree 2024 probably boils down to the candidates. If Trump runs again, any decent democratic candidate would probably beat him. Harris, she could be another Hillary Clinton. Biden had said during the Democratic Primaries he plans on serving one term. I don't expect him to run again. I do think his hand picked successor, Harris is probably the worst candidate.
If the GOP decides to run someone else other than Trump, who knows. I think the best bet for the Democrats would be a fresh young face, if from flyover country, so much the better. The Republicans, I don't know who will come forth. Kasich and Rubio seem to be out of the picture.
But yes, if the GOP wins the presidency in 2024, yep, that's may be the decade.