Kakashi Has Copied The Fireball
Yes he can. His sharingan enables him to see the hand seals movement of the enemy, where then he do the same seals, thus copying the jutsu.
Kakashi's IQ is unrivaled and he has constantly shown his ability to adapt and identify the best solution at any given time. After losing his Sharingan, Kakashi could no longer copy jutsus or use Chidori. But that has not impacted his role as an influential ninja of Konoha. Kakashi Hatake's Purple Lightning!
The Sharingan can copy jutsu, so members of the Uchiha clan who possess it enjoy the benefits of copying more than others.
Kakashi was able to copy many Jutsus from many shinobi throughout his life because he uses a unique ability of the Sharingan, Which is called “Eye of Insight”.
6 Eight Inner Gates
While Kakashi isn't specifically skilled in taijutsu like Guy, he can still access the Eight Inner Gates. This was seen during the Chunin Exams arc where Kakashi used the ability while doing a rock climbing exercise.
While Kakashi no longer has access to the Sharingan's power, he still possesses the thousands of techniques that he had copied over his lifetime, therefore retaining the title of the Leaf's Copy Ninja.
The 2nd and 3rd Tsuchikage are the only known ninja to have ever used Dust Release, which makes it the rarest chakra nature in the series, but it also happens to be extremely powerful.
1 Baryon Mode
Baryon Mode powered Naruto Uzumaki up to great levels, and made him strong enough to overpower Isshiki Otsutsuki in battle. This transformation made him the strongest character in the story, and is Naruto's strongest form by far.
Kakashi had already lost his Sharingan at this point and this weakened him quite a bit. With Naruto Uzumaki, the Seventh Hokage, being considered the strongest of all time, it is quite clear that the weakest of all Hokage is one of Kakashi Hatake and Tsunade Senju.
In the Boruto era, Kakashi is certainly weaker than he was in Naruto since he lost his Sharingan, and in the process, a big chunk of his powers.
Kakashi is considered one of the strongest shinobi in the entire Naruto series by fans and critics alike. His notoriety as the copycat ninja and Chidori creator bulked up the legends of his strength. Many fans cannot imagine him being beaten.
Not really. First, while he does know over 1000 jutsu, that doesn't mean he knows how to use them in their most effective situations. He knows how to perform the jutsus, but he rarely uses them, simply because he has mastered a few of them in order to use them with different tactics.
Kakashi lost his sharingan after he fought Obito. He is still able to use the 1000 techniques he copied, but he is not as effective as before.
Because Tailed Beasts are life-forms made of pure chakra, they are eventually reborn after dying. They will always come back, but until that happens, they're factually dead. So, deliberately creating some new Tailed-beasts to get Kurama back does not seem like something Naruto would do.
Naruto has excellent healing abilities even without Kurama since he is from the Uzumaki clan. However, his healing abilities were far greater when he had Kurama and his chakra at his disposal.
Edo Tensei
Edo Tensei is easily the most terrifying forbidden jutsu in the Naruto franchise. Originally invented by the Second Hokage, this forbidden jutsu was later discovered by Orochimaru and perfected by Kabuto.
The strongest Forbidden Jutsu of the Uchiha clan is known as Izanagi. This Jutsu allows the user to turn illusion into reality and in doing so, change the events in real life. Most of the time that Izanagi was used, it allowed the user to survive death by rewriting it.
1) Madara Uchiha
This man was able to tame tailed beasts which really showcased his strength. As a child, Madara was able to awaken his Sharingan with one Tomoe in each eye. His mastery of the Sharingan and jutsu capabilities makes him far stronger than Kakashi.
Madara Uchiha is among the most powerful shinobi to have ever lived, and his power only increased when he attained the power of the Sage of the Six Paths. He was able to fend off both Naruto Uzumaki and Sasuke Uchiha for a time in this form, and Kakashi Hatake would likely be unable to subdue Madara on his own.
One of the Three Great Eyes in Naruto, the Rinnegan eyes are the strongest of them all.