It's not a matter of "lowering standards." It's a matter of re-evaluating your approach to getting your standards met. If you have supposedly high standards and you end up only meeting "the wrong people," then either your standards aren't as high as you want people to think or you are too contrary to let not getting your standards met interfere with how you select your dates.
Precisely. As an example, I've seen out-of-shape people demand that their dating partners be in good shape. They could always "lower their standards" and date other out-of-shape people---but it would be more feasible for them to become the type of person they’re trying to attract.