Let's get down to business:
With 1, stylish style
You can wear a sweater with a high collar and a bottom (the elderly can choose loose ones, which will be more casual)
Wear a cool woolen coat outside (recommended black/gray, classic and versatile)
Jeans or black pants are good below (if you don't want to look particularly thin, you can choose a narrow straight tube)
Shoes are generally exclusive, and board shoes are ok (black/white).
Matching 2, sports and leisure style
You can wear a sweater as a back coat inside.
In recent years, bright coats are very popular. You can wear a down vest or a whole coat.
Jeans+sneakers (this style is the simplest, you can wear it anyway)
3. Small fresh air
Inside is a T-shirt (solid colors or pictures/letters on the front of the clothes are ok)
It is recommended to wear a sweater with horn buttons for the coat (khaki is a popular color in recent two years, and this sweater is usually padded inside, so it should be possible to keep warm).
Jeans+sports shoes/casual shoes
In fact, the collocation is very simple.
A suit with no more than three colors is OK for you to wear.
After that, it got complicated.
In fact, if you have time, you can watch popular Korean dramas (just a glance).
The hero in it is usually about your age.
Their clothes are fashionable and avant-garde but not too much.
Generally, it will be popular there for about half a year before it will follow suit in China.
Because I used to make women's clothes.
So you may be more concerned about this aspect.
The above is purely a personal opinion, and I hope to adopt it. (Take my brother as an experiment if nothing happens, but I am a little lower than you, and the effect is quite good. He likes it, too.