I mean something even older such as Windows XP (EOL on 2014) where i see some people claim they can't use internet properly due to SSL/TLS problem.
Yeah, Win XP is really old, however this thread suggests that these issues can be solved by installing a custom browser or a new root CA:
https://www.reddit.com/r/windowsxp/comments/qv8u9k/cant_connect_to_https_with_win_xp/Another solution I was able to find is to install an update (KB3055973-v3), which adds support for TLS 128-bit & 256-bit Advanced Encryption Standard (AES) cipher suites. After that, you should be good to go and no OS update is necessary.