I just gave you an example of voting leading to a major change. Marijuana became legal at the state level through voting. You can keep saying that voting doesn’t matter, but it won’t make it true. 

Local elections involve voting. Voting is not the only form of political action, but it is a major one. Most of the money and influence that goes into politics is to affect voting. What do you think all the hundreds of millions of dollars Zuck donates to the DNC goes towards? You guessed right, getting certain people elected by paying for advertising, etc. 

It all comes down to voting. Unelected officials are appointed by elected officials that got there because the people voted for them. This is why libertarians are immaterial in politics, they fall for the psyop that voting doesn’t matter so they are irrelevant in elections and political life