Was Palpatine sad?

Palpatine is not a tragic character. He is shown from his youth to be truly evil: long before he met his Sith master, Palpatine was a criminal and a killer. He slaughtered his entire family without doubt, and from there became a Sith. The fact that he got as far as he did and killed as many as he did is very sad.

Why did Darth Sidious turn to the Dark Side?

Palpatine suspected that Vader wanted to turn his son to the Dark Side and overthrow Palpatine with his help. Killing your master after you’ve found your apprentice was Sith tradition, after all, and it was exactly what Palpatine had done to his own master, Darth Plagueis.

Why was Palpatine using force stealth?

Palpatine was using Force Stealth to hide his Force presence from the Jedi. Force stealth also referred to as Force Concealment or Buried Presence was a power that was used by highly skilled Force-sensitives to mask their Force alignment (Light or Dark), their ability to use the Force, or even their entire presence from other Force sensitives.

Why did Palpatine hide his identity as Darth Sidious?

Because the Sith Order existed under absolute secrecy, Palpatine kept his public life separate from his role as Darth Sidious. Palpatine could use his secret persona to advance his ambitious political career without any suspicion of wrongdoing.

What happened to Palpatine in the Last Jedi?

After Anakin informs Windu that Palpatine is a Sith Lord, Mace and 3 Jedi (Kit Fisto, Agen Kolar, and Saesee Tiin) go to arrest him. After a bit of banter Darth Sidious then kills the three Jedi almost instantly.

Did Darth Sidious ever hide his presence with the force?

Darth Bane initiated the rule of two for several reasons, but one of the primary reasons was for the simple fact that without an enemy the Jedi became apathetic. So yes, Sidious concealed his presence with the force, but the Jedi also were not looking for the Sith after thousands of years.