If you need an earlier version you have to contact Adobe and asking them for a download link.But it isn’t sure you’ll get it.
Contact Adobe support by clicking here, https://helpx.adobe.com/contact.html?rghtup=autoOpen
In the chat field (lower right of screen) typing “Agent” into the chat text field will bypass the initial chatbot. Be patient, it can take quite a while to reach a human. Explain why you need the old versions, and ask politely for the links.
If you are not able to get to the chat window, then disable your ad-blockers, firewall, enable cookies/scripts on your browser.
But again: It isn’t sure that you get the link for an older and unsupported version of a Adobe application.
If you get the links save the downloaded files for further use.
My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 26H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 9 - PureRAW 6 - Topaz Photo AI