I understand why. The Trump picks overall didn't fair well and here's the reason why. They didn't do what Kemp and DeSantis did, which was to focus on the issues: inflation, economy, gas prices, crime, and border security. Trump only endorsed those who said Trump got screwed in 2020. The rallies he appeared to "support" his candidates were forty-five minutes of how he got screwed, and then the last two minutes talking about the candidate he was there to support. It was really easy for the news media and the liberal opponents to keep the Trump-endorsed candidates talking about how Trump got screwed.
Before Trump began endorsing candidates, polls showed the GOP was going to crush the Dems. That is until Trump started endorsing. McConnell was correct after the primaries when he said there would be no red wave because Trump's candidates were not quality candidates. How much money did Trump donate to his chosen candidates? Zero.