How would you explain a sentence to identify the subjective mood

The subjective mood is a grammatical mood used to express various states of unreality such as wish, doubt, possibility, necessity, or action that is not yet completed. A sentence that identifies subjective mood usually contains a verb that expresses a feeling or attitude towards a situation or action that is not yet certain or real. It often starts with "If" or "I wish" and relies on personal beliefs or opinions of the speaker. Example: "If I were rich, I would travel the world." In this sentence, "were" is in the subjective mood because it expresses an unreal and hypothetical situation.