@AtaraXio your conversation with @centen makes me want to start dream journaling, too!
I also journal, but it's just what goes on in my life. I think the answering questions thing sounds like a better idea tbh.
My experience has shown that you shouldn't wait until the morning for writing down your dreams. Put a sheet of paper on your bedside table. When you wake up at night after a dream, immediately write down the most important details using some keywords. What happened in your dream, are there specific details that attracted your attention in particular? What were your feelings during the dream? You can also use your phone and a voice memo app. You'll remember your dreams better in the morning and the dream diary will be more detailed.
When you 'work' with your dreams, there will be also a better connection to your subconscious during the day. For example you might remember things better, are more creative, learning might be easier. Things like that. A dream journal can be some form of therapy too. It's no replacement for a therapist, but it might be a very good addition.
Here are some tips how to start and you'll find many more informations online about that topic (for example at YouTube).
Your nighttime visions could shine a light on your deepest emotions. Follow these five steps to start dream journaling.
www.sleep.com
Try what works for you. But don't believe people that want you to believe that you need to buy any books or pay for any online courses. None of this commercial stuff is needed.