While I have analyzed this from a perspective, were you actually looking for technical help with a legal installation of an older version, or perhaps a list of free alternatives to Illustrator?
Users lose access to critical security patches and the "Cloud" features (like Adobe Fonts or Cloud Documents) that make the modern suite efficient. The Ethics of Digital Access Download Adobe Illustrator 2020 v24 521 rar
Because these files require the user to disable antivirus software to run a "patch" or "crack," they are perfect delivery systems for ransomware or keyloggers. While I have analyzed this from a perspective,
Since Adobe moved to a monthly subscription plan years ago, a segment of the user base has sought "cracked" standalone versions to avoid recurring costs. The .rar extension is the hallmark of these third-party distributions, often hosted on peer-to-peer networks or "abandonware" forums. The Risks of "Cracked" Software Since Adobe moved to a monthly subscription plan