No, they probably won't.
First, it's the old expression, "Congress sucks, but my Congressman is a pretty good guy." Of course, only 37% of Americans can actually NAME their congressman.
Second, Most of the districts are pretty thoroughly gerrymandered to the point where they just aren't competitive. So you are going to have at most 30 districts in play. 97% of incumbants who sought re-election got it in 2024, and 98% who did in 2022 (The red wave that never happened).
Third, the Senate map kind of sucks for Democrats. Only one Republican is in a Blue State, Susan Collins, and frankly I suspect that after a nuclear war, the only things that will survive will be cockroaches and Collins. Meanwhile, two Democratic seats are up in Purple states.
Now, the obvious question is, what will the landscape look like in a year?
2006 Congress flipped because Katrina and the Iraq War turned the tide against Bush. 2010, Republicans won a lot of those seats back because people hated Obamacare with a passion.
Conversely, Biden got off light in 2022, and that made him (or his handlers) so arrogant that they thought he could win a second term. Clinton made gains in the 1998 midterms despite being caught with his pants down (literally).