I've decided to give things more time, but at the same time, I feel like I do not want to "try" any more. Then I thought, well, maybe "trying" is part of the problem here.
That would be a 180. Do something different.
Giving up - if you said you weren't interested in being married to your H, that would be giving up on the marriage. Should you decide this is what you want, that is ok.
Detaching merely means staying out of the fray. Detaching is just living your life as is. Detaching means you don't expect anything from your husband. Detaching is accepting things the way they are. Because when you come right down to it, the only person who can change is your H and he may or may not.
the things you have to do to save your marriage are the same things you have to do if the marriage is not saved. You just have to be the best you can be. You have to do the things you want. You have to set goals for yourself, reagrdless of who is or is not in your life, and go after them. I guarantee you that if you do this, you will be happy.