DVD file structure is not just a MPEG2 dumped in the root of the disc.
There must be a VIDEO_TS folder which contains your MPEG2 file (with a specific name, in VOB format), and other indexing files (IFO & BUP files etc).
For an idea see
https://www.tomsguide.com/us/all-you...iew-802-2.html
When I used to do some DVD creation, I used TMPGEnc to create the file structure and menus etc, then Nero to burn them in DVD video format. That was about 15 years ago though and those softwares have changed a lot since.
If you don't need DVD menus etc, then look into VCD / SVCD formats which have a much more basic file structure and should be playable in any old DVD player.
If your DVD player has a DivX logo, than that''s also relatively easy to author but only plays on DVD players with the DivX logo, so would be limiting if you want to send the DVD to someone else etc.
Don't know what your end goal is here, but what about just uploading to Youtube and sharing the link with whoever you want? I think more people will have access to Youtube than a working DVD player these days...