Single Consonant Follows Vowel

Here’s another cop-out “rule”: A vowel, followed by a single consonant has a long-vowel sound, as in riding, siding, and tiding. Now explain to me the pronunciation of coming (instead of coh-ming), boxing (instead of bowx-ing), caring (instead of cayr-ing) daring (instead of dayr-ing) and a skillion more. “S’plain to me, Lucy!”