You correctly told that your Lagna is Libra(Tula) and Sani is in 4th house.
Sani is retrograde.
There are 4planets in 11th house.Guru,Sukra,Budha and kuja..
Sun is in 10th house.Very good.
Now you are running Sani dasa upto 2029.
You are running now Sani-kethu dasa.
Sani in own house in 4th house,gives maha yoga.
But Sani is also seeing moon,which gives you
frustration and melancholy,very often.
Your question shows that you studied astrology and know
that Sani is useful for you.
You also read what is the effect of sani aspecting moon.
You will get job in Sani-sukra period.
You feed animals to get the negativity on moon.
Feed different animals,not a single animal.
You do penance for one year,to get over moon
As you got 4 planets in 11th house,you will get benefits
as you go on doing penance for more years.That 4planet
is useful to give results if you do penance. email@example.com