To start, read this: Dataview does not sort files by name - #2 by mnvwvnm
The point is: you have “strings”, not “numbers”.
What this means? You have more “content” in the title?
If your titles are only in the format you wrote above (without more words), then you have a “rule” and we can use a tricky way to achieve the wanted sort. If more words… well, depends. (maybe using a field “index” number)