Learn English – say: Technology has a word to say

The phrase could make sense, but it is lacking punctuation, and has a few grammatical errors.

It would be, "He went to see her, but I don't know if it was the right thing to do."

Hope that helps.

The intransitive use of "save" is an example of an unaccusative verb, an intransitive where the agent is removed and the patient becomes the subject. There are many in English (eg "He cooks the food" -> "The food cooks").

The Oxford English Dictionary specifically lists this intransitive meaning (16 b.): "intr. Of data or a program: to be preserved by copying from main memory to a hard drive or other storage medium, allowing subsequent retrieval as required. Of a file or storage medium: to be replaced by a changed version residing in main memory." The first example given is from 1992: " If the file won't save, try saving it under a different name."

Thus all three of your examples are fine, according to the OED.