Jesus wept.
Do you think that was for joy? when his friend had just died? He even knew that he was about to do and he still wept for his friend.
The Bible is full of people who wrestled with God over "things that didn't go their way". Even the ones we consider "great", like David. Have you ever read his Psalms? Heard his distress and pleas for help? Hannah was so distraught that Eli thought she was drunk. Elijah wanted to curl up and die. The list could go on. No where are these things considered bad or negative in any way. To the contrary, God came along side them and lifted them up.
The only times that questioning or wrestling with God was ever considered bad was when the person was angry at God and failing to recognize his sovereignty, and that is NOT the same as simply being upset. You can be upset and still trust that God is working everything for good. Those two things are not in opposition.
I think I do understand what you're going for here, but bestie, reconsider your words. Sentiments like this reinforce toxic positivity mindsets that result in isolation and an inability to ask for help when you need it. It promotes bottling up your feelings for the sake of "being happy" instead of dealing with them in a constructive way (and letting your experiences and the resulting feelings draw you nearer to God). This idea of never allowing yourself to feel upset over anything isn't healthy.
So for anyone who needs to hear it: You don't have to be happy all the time. I promise it's okay to sit on your couch at midnight and sob, or lay facedown on the floor doing the same, or whatever, as long as, at the end of it, you can say that God is still good.
Jesus wept too, after all.