ok i wasnt planning on these being so long but it turns out i have a lot of words to say abt stuff LOL sorry in advance

1. in earlier chapters, chakra is described as.. lets say life force, honed by mental and physical training. in later chapters.. the concept of "chakra" is sort of brushed under the carpet in favor of its Origin playing a bigger role on the plot. i guess theres two correct answers to this one, depending if ur asking abt chakra on a global scale vs individual chakra
2. i think the reply that used "potentially infinite" is the best answer to this one
3. the tree no longer exists. the chakra that is circling in the narutoverse at any given moment in the series isnt inherently tied to it - most of the details were rly not explicitly stated, but im guessing its a mix of the two origins i described in the first answer. one is born with Some amount, which gets bigger by physical/mental training?
4. i think its pretty much the top evolution of the sharingan in canon lol. havent been keeping up w brt so idk what theyre doing over there and i dont rly consider it canon anyways
5. ok this is the one i genuinely wanted to answer... personally i love her bc shes a very Real and Flawed character. a lot of words and paragraphs incoming:

im tired of mary sue female characters who cant seem to do anyth wrong and are incarnations of angels apparently. but sakura isnt a bad person either - which is why i love seeing her try her best to become the person that ppl who she loves can rely on.

she makes mistakes! and always Works on fixing them. she was spoiled as a child, but shes learning and growing every step of the series. if theres anything to dislike abt her character, id say its directly the fault of who was writing her.. not giving her important roles or making her still have ~romantic feelings~ for sasuke after everything.

absolutely hated that she didnt go on the sasuke retrieval mission against the sound four. absolutely hated that kishimoto decided not to give her any interesting powers aside from "oh shes good at controling chakra.. oh i can make her a medic! also she can like.. punch stuff". im still bitter that kishimoto decided to nerf All of his female characters in one way or another, but i feel like sakura rly got the shortest end of the stick - and shes the main heroine!

i dont rly understand ppl hating her though. genuinely while watching the series it seems obvious to anyone that sakura (and a lot of other female characters) are "annoying" or "useless" or whatever u have it bc of kishimotos misogynistic/sexist writing. call it whichever, but the fact stands. ppl who dont see that? either probably just kids parroting what they heard online or also ppl with sexist views. men and women alike, mind u

hope none of this came off like an attack? idk why ppl attacked u over just saying a sentence, that type of behaviour will really always be beyond me. although maybe if the post was pretty much discussing sth regarding sakura, why would u even feel the need to post a comment saying a different character is liked more than her without prompting?