Spying on all the candidates serves what purpose that doesn't involve interference? To maintain a nice database of their positions? At best, they didn't interfere as things were already going their way.
Regarding spying, of course that serves purposes other than interference. Think of insider trading - you get the insider info not so that you can change the outcome if you don't like it, but so that you can make a profit on that outcome when it actually occurs.
That doesn't stop it from being interference. Major events like terrorist actions change voter opinion, and someone in control of a party's platform and agenda has a massive influence on an election.
What information are they profiting on? Does it seem like politicians spend the election period preparing their policy for when they win?
If you really believe that spying is interference, then you also believe that there’s never been a fair election ever.
And no, I don't think many elections are overly fair.
"Do what we say, if you don't we'll punish you or you'll be forced to do what they say."
None of what you're describing particularly sounds like "free choice by the people." It's just been normalized so you don't see it as unusual or call it interference. As you say, the US is a super power. They aren't tasked with the burden of dealing with other super powers, they exert their power to maintain and further their position.
Oh, and when you look at the sheer volume of regime changes the CIA has been involved with, the blackmail becomes obvious. You know they're spying, you know what they're capable of and willing to do.
Yes, undoubtedly. From postwar Operation Gladio to 2012's revelation that they were spying on elections[1], the CIA has maintained a hand in French elections.
https://m.huffpost.com/us/entry/us_58a75f43e4b0fa149f9ac5a3