Here is why, followed by a constructive alternative:
These "high quality extra quality" pirated files are often malware vectors. An average file size for a legitimate 90-minute 720p play is 800 MB to 1.5 GB . A file labeled with "18" (likely 180MB or 18fps) is a heavily compressed, terrible-quality rip that frequently contains adware or malicious scripts.
Searching for a "Full Natak 720p" outside of official platforms (like ShemarooMe, YouTube official channels, or Zee Theatre) leads to pirated uploads. Writing an article that helps users find low-resolution stolen content (the "18" likely refers to a file size in MB or a mis-typed bitrate, which is far below "extra quality" for a 720p file) violates copyright laws and platform policies.