Hello & Welcome, 988154!
I regret but am not surprised your friends cannot appreciate your diagnosis. People who who have not experienced a form of depression rarely understand what it really is. And, being young, many will dismiss your feelings as typically (stereotypically) those of teenagers.
If you can find anyone willing to learn about the realities of clinical depression I recommend
of Stanford University.
Please keep posting.
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My dog

mastered the "fetch" command. He would communicate he wanted something, and I would fetch it.