It is not possible to write a meaningful, high-quality "article" for the keyword in the traditional sense of a journalistic or SEO-driven content piece.
Save yourself the frustration. Drop the "WEB-DL 720p" jargon. Search legal databases using plausible Hindi title variations. If you still find nothing, accept that this title may have been a small production lost to time. There are thousands of legitimate Hindi romantic films and series from 2020 that are waiting for you on Amazon Prime, Netflix, and Disney+ Hotstar – all available in clean 720p and 1080p, completely virus-free. -18 - Remember Love -2020- Hindi WEB-DL 720p