Naruto Uzumaki is indeed very strong, he masters various jutsu which are useful in battle. But only a few jutsu that he created himself, like what examples?
1. Sexy no Jutsu
Sexy no Jutsu is a technique where Naruto turns into a sexy woman who can distract his opponent. This is Naruto's early technique and one he developed himself, continues and can be used by Konohamaru and Boruto.
The variation is Harem no Jutsu where Naruto uses Bunshin then uses Sexy no Jutsu, there is also Reverse Harem no Jutsu where Naruto uses Bunshin, but instead of being a sexy woman, he becomes a handsome man.
2. Futon Rasengan
The Rasengan isn't a jutsu created by Naruto, this jutsu was created by Minato, but the Futon Rasengan is different!
The Futon Rasengan is a condition in which Naruto manages to incorporate his natural element, namely wind, into the Rasengan. As the first person to successfully incorporate elements into the Rasengan, Naruto created the Futon Rasengan or the Wind Rasengan.
3. Rasenshuriken
After Naruto managed to combine natural elements with the Rasengan, Naruto learned to shape the Rasengan. So he formed the Rasengan into a Shuriken shape, hence the name of the Rasenshuriken technique.
Rasenshuriken is Naruto's most varied jutsu. Depending on what natural elements you want to put into it, there is a Rasenshuriken variation. Not only natural elements are included in Rasenshuriken, Naruto can also make variations with Bijuudama.
4. Planetary Rasengan
The Planetary Rasengan is a technique in which Naruto develops the Rasengan even stronger. Naruto made a big Rasengan in his hand, then there was a small Rasengan orbiting around him. Later the attack power will be strong and spinning, so the destructive power is also very high.
5. Lecture no Jutsu
Maybe this fifth point isn't a real jutsu, but it's really Naruto's quite reliable technique. Lecture no Jutsu, Naruto will talk to his opponents, especially those who have conditions similar to Naruto before.
If successful, the opponent will melt and even become Naruto's friend. Many victims such as Zabuza, Neji, Gaara, Nagato, Obito, and others. They are strong again.