Copy a column with csv to writer

And keep numbers seperated by commasband space only

It seem that the question was edited in How do I insert comma separators for tel numbers
Sugest to delete this one.

Ok, so the column has the numbers separated by space only when copied. When pasted to send a text message, ,it will not send unless the commas are inserted first.
How do I fix without having to insert commas one by one?
Thanks.

This should be appended to the question by editing. It’s not an answer.

What about using a helper cell with the formula =TEXTJOIN(",";0;A2:A51) e.g?
The result may then be copied and pasted elsewhere. (LibO Calöc V 5.4. or higher.)