that page linked to the deepest rabbit hole of "christianโข" content i've ever seen
also source of a bunch of top tier quality imagery https://jesus-is-savior.com/Womens%20Page/feminist_bighead.gif
I'm probably too old to still relate to any phase of gloom and doom, but I'll just say that it's natural to feel sad all the time when one's circumstances really ARE that bad. Sometimes there are cases where one can't help but feel sad about a situation. When you do something you enjoy, you're satisfied. When you're life's sad, you're sad. It's the most natural thing in the world.
So, you're right in saying that emotions are situational. They can't be forced. However, where real strength comes from, I think, is from keeping emotions in check, so even if you feel them, you still figure out ways to make yourself useful for those you care about (or if you don't care about anybody, then yourself). Still, there's nothing wrong with how you are. It's just a marketing trick.
You can't sell anything to a person that's happy. If they're happy, trick them into thinking they're not. Truth is, whatever you are, if you're content with whatever emotion you're feeling, you're fine. People don't need to be happy all the time, and even if you're sad all the time, that's okay too. If there's reason to be sad all the time, it's probably normal.
You are aware of your situation and that in itself is a good thing. I would tell you not to waste energy thinking about how others would perceive you, but try to orient your days towards things that at least don't make you feel bad, Some days will be better than others, but the important thing is to try, for you, for your own wellbeing and from there you will get used to the rest of the world. Take care.
take me with you ๐ญ๐ญโผ๏ธ