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It's odd that they would remove that but it could be possible I suppose. It would have been helpful if we knew what device you have, on my Samsung this under Data Usage, which is where I would imagine it being on every device. I think where you missed the search was adding the extra word, warning, just try data. Then if you see anything that says, usage, because that is what you're looking for, try that.
If it turns out that this is truly related to Android 12 we have an Android 12 forum where this question could be put before other Android 12 users. Or if we knew what device you have there may be a forum for that here as well. Either way with more information there are more options.
Let us know what device you have?
We can see what the moderators say about moving this to A12 threads,
@B. Diddy and
@mustang7757?
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