If you truly want MP3 files you can keep forever and move between devices, buy them.
Cost for 90 songs: Approx ₹1,500-2,000. A small price for legality, safety, and quality. 90 Bollywood Songs Collection Zip File Download
Zip files are the perfect hiding place for malicious scripts. Many "song" zip files contain executable (.exe) files disguised as MP3s. Once extracted, they can: If you truly want MP3 files you can
If you insist on searching for a pre-made collection, use these safety tips: Cost for 90 songs: Approx ₹1,500-2,000
While technically against YouTube’s ToS, many users use reliable converters (like 4K Video Downloader or YT-DLP) to extract audio from official T-Series or Sony Music channels. Note: This is legal only for personal, non-distributed use in countries with fair use laws, but the moral high ground is shaky.