That's easier if you don't know the keybinds, but the faster way is using the Option key to type the accented letter in 2 parts. You first press Option along with one of: `, e, u, i, n. And then just press the letter you want to apply the corresponding accent to.
On the rare occasions I need one of them, it's rarely one of the common ones. I work with a lot of music scores with lots of weird French and Germany characters that are a little more involved.
On the Mac, it's quite easy to have customized keyboard layouts to make it easy to type characters you use frequently. If you want to have Option-f and Option-p to give you 𝆑 and 𝆏, you can. https://software.sil.org/ukelele/ is a nice GUI that lets you start from your current preferred layout and make changes.
https://raw.githubusercontent.com/mirror/libX11/master/nls/e...
http://wincompose.info/