https://effectivegov.uchicago.edu/primers/term-limits
"Key Takeaways from the Research:
Term limits would remove from office high-quality elected officials who the voters like.
Term limits would reduce the incentives of elected officials to work hard and please the voters.
Most incumbent success is attributable to the popularity of the candidates, not the institutional advantages of incumbency.
Empirically, term limits appear to reduce economic growth and increase ideological polarization.
There still are reasons to support term limits, particularly when our elections and governing institutions do not perform as intended, but there may be better solutions to these problems that do not sacrifice our best elected officials or remove their incentives to do a good job."
https://www.britannica.com/procon/congressional-term-limits-debate
"However, the constitutionality of this state action was debated at the Supreme Court in U.S. Term Limits, Inc. v. Thornton, and in 1995 the Court agreed in a 5-4 decision in that case that states cannot impose additional restrictions, such as term limits, on its representatives in the federal government beyond those provided by the Constitution. As a result of the Supreme Court ruling, congressional term limits may only be imposed via an amendment to the U.S. Constitution."
Ranked choice voting and other election reforms making it easier to vote combined with enforcement of existing restrictions and the passage of additional restrictions on money in politics will be much more effective at fixing what is wrong with our government. Reviving the fairness doctrine would also help.
Edit to add: an upper age restriction on lawmakers would also help.