I need some answers.

You see i've been an aspiring writer since 2012, i made a couple of good stories already some reaches 100+m reads on wattpad. But since 2020 i lost all my desire to write a story. I can write 40,000 words in just 5 chapters and that's it. I always hit writer's block whenever i tried to read my story for editing. I am an exclusive writer in an app, and it's embarrasing to say this but... I can't find a heart to write anymore. My thumbs weren't the same anymore. Is there someone who can recommend things to me? Like a ritual before writing or change app? What app you use to get inspiration? i tried Pinterest but that's all. What app you use to write a story? Did you do it with your phone or computer? What book should i buy to fix my grammar and english? My stories are good, but i always felt it's lacking compare to other stories right there. Help me please? I still want to write. But i cant find a heart to continue it anymore.