My love story with Yamada-kun manga has wrapped up. It had a final chapter that concluded the various storylines. Some fans loved the ending, while others had mixed feelings. But it's up to you to decide how you feel about it.
Some libraries offer digital access to manga. You could check if your local library has it available. Also, there are dedicated manga apps such as ComiXology and Shonen Jump that might carry it.
I'm not sure which specific 'Yamada My Love Story' you are referring to. There could be various stories with this name. It might be a personal story someone wrote, or perhaps a less - known piece of literature or film.