I'm Homeschooling my kiddos and multitasking while they're busy, so I can't watch their videos, but I have to tell you. I've been there. I used to write poems and lyrics when I was a teenager, but I never shared it. Then at 20, I was asked to sing in a rock band performing covers and originals. The other musicians were so awesome! They were welcoming and we would just jam for hours. They would start with some riffs while I rifled through pages of stuff until a word or a sentence stood out to me. The point is not to overthink it. I can't tell you how many original songs remind me of other songs. It's just the way it is. We all hear things and process things differently.
My last bit of advice is to try what I call meditative journaling. Keep a notepad by your bed and when you wake in the morning, start writing first thing. Don't think, just write. Even if it's something like this, "This is so stupid. I can't think of anything to say. What am I doing? Nothing. Nothing..yada-yada..." It sounds pointless, but you will release some of your inner critic and eventually start moving on to more meaningful writing. Best of luck to you!