And they can flip the vote as soon as you leave the polling booth, or not even record it, and you'll never know. Just "trust the system"
I think it has been recommended before, if you want to see this, sign up to be a poll observer. You will get to see the whole process.
Thousands of issues of voter fraud, and these are only the instances where they got caught. Polling officials are usually the ones that are responsible for mass voter manipulation, just look at what happened in Iowa and Georgia.
Poll watchers are appointed by political parties. It is not something anyone can sign up for and get to do. Monitors also do not directly prevent electoral fraud.
Looks like you've found the problem. Of course you don't get the benefits of a public election if the election isn't public.