Are republicans closing in something of a permanent senate majority?

To clarify, i don't actually mean to the end of times, but for a really long time, probably to the end of the 2030s or something.

Its no secret republicans have the advantage in the senate, more red states than blue states, and partisanship taking over, and the last remaining red state dems got swept away in 2024, makes it even more of an uphill battle, another 3 seats democrats have to make up for in swing states.

Problem is, democrats are not that far of maxing out in swing states, in the coming two elections, there is a seat in Wisconsin, seat in Maine, two seats in NC, there isn't much else i can think of, thats 4 seats, they can only fail at one of them(if they win the presidency), they also have to defend literally everywhere else.

Dems got fortunate in 2022, having to run against really poor republican candidates in states like Arizona, Pennsylvania and Georgia, they can't count on that going forward.

There is also the problem that most swing states aren't trending blue, some of them are even trending right(Nevada and Arizona in particular), making the pathway to the senate even more difficult.

They need new paths to the senate, but there doesn't really seem to be any, so it doesn't look great.