US Intelligence "spies" everyday. We want them to.
There are legal protections re US citizens. There is oversight.
We want our Presidents to be well informed on all national security threats -- "foreign and domestic." In fact, we all hope that Trump would avail himself of the daily intelligence gathering. See COVID-19. See 85,000+ US deaths so far.
Except perhaps in your "dark web" news sources, or within Fox News, there is not going to be a scandal that the Obama Administration "spied" on the Trump Campaign for any nefarious purpose. Total nonsense.
Trump and Flynn sought to undermine US sanctions against Russia BEFORE taking office. Fact. Flynn was compromised. And Trump wanted Flynn to be our National Security Advisor. And then Trump fired Flynn for lying to Pence.
Go chase cars on the thruway. You will feel better.