I'm not sure what dictionary you've been looking at, but that's not what privilege means, and it's clearly not how the OP was using it.

Hint: the definition of privilege is not "when I get stuff for free and nothing bad ever happens to me".

Nobody just lets me have things

You and other cishet white guys have, for hundreds of years, had things that others didn't. You've never been told you aren't allowed to marry the person you love, you've never had to protest and riot for your right to vote, you don't have people constantly in your DMs saying that actually, you aren't the gender that you are

Maybe nobody just lets you have things, but also nobody tries to deny you basic rights. Less than 20 years ago, 49 out of the 50 United States did not allow same sex marriage. It wasn't until 2015 that every state was forced to recognize its legitimacy, and the present supreme court may very likely overturn that decision and allow states to ban it again. Unless you're less than 8 years old, don't act like you've never had privileges that were denied to other people based on your sexuality.