I may be late, however, I do have quite a few recommendations.
There can be some factors towards whether you prefer "certain" aspects such as Turn-based, classics or even, as you already played, modern styles. One I would recommend is expanding your palette within the FF series. Any game is good to start at, but if you are not so sure, then I would say FF 10 as it is a good blend of the classic and modern approaches to the series. From there, you can decide to venture out to the classical (anything before 10) or modern era (after 10).
I would also recommend the Nier Series. Definitive stories, and it will have you much to think about, both in terms of the game itself and on your perspective of life. *insert winking emoji here* You do not have to play the recent Nier game to play Nier Automata and vice versa. Additionally, trying out the past Persona games and its counterpart series, Shin Megami Tensei, are also good branches to play. (Another recommendation I feel tempted to speak about is Kingdom Hearts, although, if you do not mind the disney aspects, then you can also invest time to researching that series)
Lastly, there also exists good, yet sometimes underrated, JRPGs out there. The only ones that come up to my mind are the Star Ocean series, Atelier games and more. Overall, it is up to you and what you like that determines what to play next. I hope you have a good starting journey into this wonderful gaming genre,