Is it normal to reach 50 or 55 and just be angry or depressed always?

With proper planning and an eye on physical fitness, life should really be be a hoot at that age.
You've 50+ years of experience dealing with women; you should know what they like and not, therefore, you should have plenty of companions available to you.
If you have planned somewhat well, you can have a few toys, at least a decent income and all the time to enjoy both.
What's to be depressed about?

Unless you've been having periods there is no such thing as male menopause, how could there be? Have you given birth too?

There is ageing and it does take some getting used to but it's better than the alternative (think about it).

If you're depressed you need to do something about it and not blame it on a mythical condition

Been like that since 30. Consider yourself lucky.

if you don't have any real problems, just shut up and live your life... gawd!