I think most of the important things have been said already.
I want to add that being fucked is incredibly masculine to me. Like literally, you are already a man. Then you have an additional piece of manhood inserted inside you. You become, like, 1 and a half times as manly as before you did it, right?
Just let go, enjoy it and embrace it! You're the same person before and after you'd had a massive dick inside your ass. Just maybe a bit more manly and happy afterwards.
And yeah, experiment with sex toys or objects (safe, i.e. no glass, no objects that can unscrew and/or end up locked inside). Take your time, think of it as a relaxation moment. But don't forget to have a vivid sexual imagination while you're doing it.