BobbyG

I started using toe clips back in 1998. And use them on my three bikes. I was a daily commuter until this year (2021).

Also this year I bought an old folding bike that came with flat pedals (that fold up). They're just plain plastic pedals with some texture, but no pins.

I found I tend to end up pedaling with my feet pointing outward. But I haven't had any foot slippage as I feared I would. But I am not riding off-road.

I think pins, or strapless half-clips (small toe clips) may be a solution for you.