To achieve your goals requires a state convention to amend the constitution.
Which is far too dangerous.
The way to start would be at a state level.
Creating a fabric of state-level laws constricting one's own state to one term as the norm for all political offices.
Once that meme is fully inculcated at the state level, the cultural push could start on fed politicians, at first as voluntary campaign pledges.
There is no way the feds will voluntarily relinquish their non-Constitutional powers.
After broken promises, and only if the majority of states had adopted one term only, could a States Convention be contemplated.
The point is, the country is currently so devolved from the original, Constitutional format, not to mention morality, trusting state level bureaucrats to 'fix' things would be a huge gamble.
Do you actually trust career politicians to do the 'right' thing?
If so, you may want to consider moving away from large cities if you're wrong.