It sounds like you might like Logsec. I use it for general note-keeping, but I think it would work really well as a journal because it defaults to a new time-stamped entry when you open it. These entries are presented chronology like a journal, and you can create links to other pages if you want to dive further into a specific topic.
Also, all entries are saved as standard markdown files, so they would be easy to adapt to another software later if needed. This also makes it really easy to sync data between devices with something like Syncthing.
I'm still rocking a 7-year-old Galaxy S9+. A few years ago my headphone jack wore out and the gapped hole no longer retains my earbud cable. Since then, I've been using a USB-C adapter, but the combined earbud and charging use is starting to take it's toll and the port is beginning to feel loose.
Adapter use seems more abusive to the USB port than just charging, as it occurs when the phone may be in a tight place (like a pocket), with torque applied to the adapter body. I'm convinced that if I was limited to USB-only over the full life of this phone, I would have lost wired headphone and wired charging capability a long time ago.