Safari 14.0 removes support for Flash Player and it’s not coming back. As of 12/31/2020 Adobe will stop developing, updating, patching of Flash Player and will no longer distribute it either. The following link is Adobe’s statement on the EOL (end of life) fo Flash.
Adobe Flash Player EOL General Information Page
Adobe strongly recommends users uninstall Flash as soon as possible. After 12/31/2020 all browsers will start to remove support for Flash. Adobe gave developers THREE YEARS notice this was coming and now it is here. Adobe even states it will begin blocking Flash media from playing. If the website you visit still uses Flash all bets are off after December.
Finally, after Flash is officially killed any offer of a download of Flash will be fake and probably loaded with Malware as Adobe will no longer offer it on their website for download.