Please recommend a small pretty tree for my front garden

[SunnySummerDays]

I keep looking online but can't really see what I want/need.
It's a small garden with s little wall round and planted cottage style with plants and a cobbled path between. I'd like a small pretty tree with one trunk rather than many branches. Not too tall or dense . No more than 4m really and not too wide. Thanks for any suggestions !

Not sure if this helps but these are 2 of the 150 photos I collected when I was. Doing my garden.

Thought I'd update....
Not bought anything yet, still looking. Thinking at the moment the amalanchier robin hill.
There are actually so many that tempt me, so thinking might buy one for back garden too. Looking at malus Rudolph at mo. Also like the beni chidori and I dithered about the autumnalis rosea for a while too.