MAJ - CS5.5 does not work on Catalina

Hello, I need help I am lost.

I use on my MacBook a very old version of the Adobe CS5.5 suite, purchased in 2014.

Photoshop and Illustrator becoming unstable I updated my system, I have now moved to MacOS Catalina 10.15.3

Surprise: my Adobe suite must be updated, I am not given the choice to continue using my CS5.5 version!

I'm looking for a free version linked to my account. Adobe only offers me to switch to the higher formula, which means the paid subscription (...).

Do you know a way to get an update without going into the subscription system?

I am an occasional but regular user. My info knowledge is limited and I am really annoyed.

Thank you for your answers

Nicolas