To be fair, they do have achievements. They’re just incredibly unpopular with the general public.
The got abortion banned, they brought back child labor in some states, they blocked support for Russia’s invasion of Europe, they’re blocking bipartisan legislation on immigration so they continue to campaign on it, they got America’s Credit rating dropped again, and they’re about to make it so federal regulators can’t keep food, water, and workplaces safe.
They were able to do a lot with their court appointments, local officials, and good old fashioned obstruction.