How do I repeat 3 times and on the 3rd time play a different end?

[RobDMax]

I'm trying to repeat a section 3 times and on the 3rd time through play a different ending. I've tried lots of options, including having a 1 and 2 then a 3 section, that didn't work, the most logical seemed to be use the end sign with no number then and end sign with 3 - to mean all time around use the unspecified repeat but that didn't work either. I can't think how to use a capo to do what I mean. Oh, and then the whole form repeats once, which I specify in the player.
Anyway, this is what have, might anyone suggest a way to do it other than writing it out 'longhand' with no repeat x3

Waiting For A Train 1 - Jimmie Rodgers

If it helps this is the longhand version I've been using thus far which I was trying to simplify:
Waiting For A Train - Jimmie Rodgers

 

[pdxdjazz]

The reason for repeat brackets, segno. DS, DC and ending voltas is to save "ink" and space. This is sometimes confusing to the musician,

Space is at a premium in iReal pro due to the single-page limitation.
When the tricky space-saving devices don’t work for some reason and there's not enough room to write out the phrase again, the only option remaining is to condense the needed measures to fit into the space available.
On some charts, that’s not possible to do and still have the chart be readable.
Fortunately, on this chart it is possible.

I think your “longhand” version is the least confusing.
When in doubt, play the chart from top to bottom jumping around as little as possible.

Your longhand chart has (after the intro) 8 bars that are repeated 5 times with a slightly different ending on the 6th repeat. Then a coda.
Waiting For A Train - Jimmie Rodgers

Here is a different way to write it.
Waiting For A Train 2 - Jimmie Rodgers

The benefit here is that if the musician gets “lost”, the last (different ending) section being separate, gives the reader a chance to get “found”.

I hope that’s helpful.
)BOB