Republicans made gains in House races across the country, continuing to improve in areas with more non-white voters & more culturally conservative voters, but suffered in swing races, especially when running MAGA candidates against moderate Democrats
https://www.nytimes.com/2022/12/13/upshot/2022-republicans-midterms-analysis.html
2022 Review: How Republicans Lost Despite Winning the Popular Vote

There were several reasons Republicans struggled to translate votes into seats, including candidate quality and strength in the wrong places.