But thousands of people have it working just fine. Not calling you out but it does work very well. Did you follow a step by step guide? I know websearch makes it hard to learn new tech things these days.
Just keep in mind, set up a default folder and file (filename.kdbx) to share on one device, add Remote Device (QR code helps there), go to Sharing Tab and select Default Folder. If the Default Folder isn't ticked on both devices in the Sharing Tab on each, nothing happens. When you work it out, that folder can be called anything and you can get advanced with how or when it shares or which direction the data goes (think photo backup from mobile to desktop).
New Android app to use is:
https://github.com/chenxiaolong/BasicSync
Use Obtainium- https://github.com/ImranR98/Obtainium - to install it and keep it updated. Obtainium can update itself the same way.
Convoluted, I know, but so is relying on a company to host for you in the cloud. They just hide all the complexity behind the interface. With Syncthing, once it's set up between all your devices (and there is a way to quickly auto accept setup once further advanced/knowledgeable), it just chugs along in the background. Changes to keepass file appear almost instantly across each device once it's opened.