How can I get back the old user interface, please?

I have been using this app for many, many years.
Now I find I cannot find anything anymore. This user interface is very confusing and very complicated. It is too tiresome to try to start in the evening. I just fall asleep without it because I don’t want to get irritated by this new interface. By the time I have configured the wake-up time and all other things, I am so wide awake that it is difficult to calm down and sleep again. So this app sort of works against good sleep. I am sure this is not what you wanted.
How can I get back the old user interface?
Is there a place where I can download a previous version, please?