I hope i get a response, if yes will it be updated soon?
Ik the owner of it is “retired” but cant you get someone else who will continue updating it?
Welcome to the community. 
The creator of that trainer, @MrAntiFun, is certainly not retired.
However, the trainer itself has been retired and will no longer be updated. This is because Forza’s developers have added a new anti-cheat that causes issues when using the trainer. Attempting to use a trainer on Forza Horizon 5 will always cause the game to crash at start-up.
All trainer developers on the internet have retired their Forza Horizon 5 trainers and will no longer be updating them.
This is made clear in the official threads for the trainer, for example: Forza Horizon 5 Cheats and Trainer for Xbox - #386 by Chris.
And other related threads: Forza Horizon 5 crash on start up - #23 by AussiePixelBit
Hmm okay sad…
But thank you for the answer!
Because no game developer ever treats us players! Makes this damn angry 
! I mean, it’s not like this is the first time, which was truly ironic
Most welcome!
In my 4 years at WeMod, only two game developers have ever had an issue with trainers being used in single-player game modes. Unfortunately, Forza’s devs are one of them.
As someone who actually works in the game development industry, I can say that this is a false statement and purely one-sided speculation.
As said above, only two developers in the last 4 years have had an issue with trainers being used in their games.
See my recent post here for more information: Denuvo to block cheats and mods in games - #5 by Ravenfyre.