I don't know if it was fixed or not, I just noticed the Debian bug is still open: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1008531 If you have time to investigate, I opened this gitea issue: https://gitea.wildfiregames.com/0ad/0ad/issues/8855 (feel free to assign it to you)

Would be very nice to list all the things to improve so we can keep working on the AI. There are also some AI mods that seem to have good improvements. 

I wouldn't say it's very low, but decent. Very low maybe for a player who can be considered a veteran of the game or "pro". But yes, there are still some issues. The AI doesn't counter-react to player's strategy, doesn't heal its units well, and still sends his gatherers to distant resources. Another major issue is the grouping logic, as the AI keeps sending attacking units in a straight line. Oh, and the classic one: it doesn't use Civilians only for gathering food and wood, and CS only for mining.

In any games, but especially RTSs, you can expect a huge level disparity, even between newbies. It's not always obvious what actions are important to win a game. @Seleucids you already did try to help a lot with tutorials etc. We could always use more of these, or increase their quality.  The game itself should also rework some of its design to make technicalities easier to overcome for players, or more obvious how to handle them. These points would make the game much more attractive and accessible. The AI difficulty right now is actually very low, your PRs didn't fix the main issues with it. But for players who don't know the basics it's easy to get overwhelmed, but that's not because of the bot difficulty, who is probably max 1250 in "very hard" mode. So don't worry, if your changes did improve petra, it's certainly a good thing.

Yeah bro, make sense.  But it maybe deserve more attention ? Maybe it can attract more devs to join efforts? I guess chances are small tho, but still, there are some I believe.