Not seeing it mentioned anywhere, but if you manage to emulate mother/earthbound and start getting into it you're in for a wild ride.

Those game made the history not only of jrpgs, but of videogames in general.

Furthermore, thier spiritual successors are contemporary classics, like Undertale and OMORI (which are both more story-heavy than gameplay-heavy)

My first ever was Dragon Quest I (originally called Dragon Warrior), which you can get and play on Android/iOS or emulate, depending on what kind of JRPG you're looking for. Dragon Quest XI on newer consoles is also a terrific classic-style game in the genre.

Are you into pixel art?

If so, I would recommend:

• Chrono Trigger is a genre-defining classic and definitely still enjoyable IMO. The difficulty is quite easy overall and the game doesn't require any real grinding.
• If you want something more fresh, Chained Echoes is a modern take on a lot of classic JRPG formulas, but still retains a lot of that great classic feel and beautiful pixel art.

If you're more interested in 3D stuff, Final Fantasy VII Remake is an excellent JRPG. While not turn based, it is accessible to beginners as you can tone down the difficulty a lot. Also, don't worry about the "VII" - you don't really need to know anything going into it.