You're not wrong. As fan of single-storey (your "normal") "a" and "g", a few additional examples do, however, come immediately to mind:

Classic example: Futura.

Modern examples:

Apple fonts: Monaco uses both single-storey "a" and "g"; San Francisco uses single-storey "g" by default, and includes single-storey "a" in stylistic sets.

The Adobe Source (Code, Sans) and IBM Plex (Sans, Serif, Mono) font families include both single-storey "a" and "g" as alternate glyphs accessible through OpenType stylistic sets.

I always felt somehow ashamed for liking the 'a' in Monaco.

Sassoon is designed for that purpose, this version seems OK: https://www.wfonts.com/font/sassoon

look at “Annika” it’s designed to be legible for early readers

Edit: not that comic sans is a bad choice I’ve just been working on things related to this and found that other font

Searching for it - I think you're referring to "Andika"?

https://fonts.google.com/specimen/Andika

https://software.sil.org/andika/

They’re clearly not “normal” if most fonts don’t have them (as default glyphs; many fonts have them as alternates).

By "normal" he means the glyph we are taught to write by hand, which is also the glyph young children are taught to identify individual letters.

That's what context does, it narrows!

I personally write, and have seen many others use as well, the "two-storey" a and g, so I suspect there's regional variation.