Thank you so much for this!! Is there a way to maintain the weight after the diet ends? Like I said Im close to my goal weight but I dont know If ı should keep eating or not once Im in my goal weight.
I was thinking about eating 1k cals and 10k steps and once a week i get to eat a fast food for a day. This is my after diet plan do you think this will help me maintain my weight
1000kcal is a very, very small amount!
That's not sustainable long term and might cause issues like losing your period, hair, have fatigue, feeling chronically cold, brain fog etc down the road. I say this as someone who used to eat 800-1200kcal herself a day when I was in my "close to anorexic" phase, and this is as someone who is 180cm tall.
You also mention 10K steps a day, which further cuts into your energy deficit. ;~;
Definitely not healthy!
Now I am not saying you should eat 3000-4000kcal a day,,but you should try to find a healthy spot where you feel great, look good and have energy and can to do the things you want to do.
How much that is varies by the invidual, their health history, and even diet to a certain extent.
I've personally maintaned eating 4000-5000kcal a day for many weeks on end (I love my heavy cream at times) at my most, while doing a strict ketogenic diet, and likewise maintained (read: kept myself alive) on 800-1200kcal a day at my lowest, where I had a really hard time losing more and felt awful the entire time, and cold, so cold, lol.
I don't know your health history, current weight, height, diet, exercise regimen and daily life but generally as a girl you generally want to start at around ~2000kcal a day and monitor changes over time (weeks) to adjust either up or down, but again I don't know you so I am really just guessing here.
You can use something like a TDEE calculator as well which is going to be more precise than what I said here.
There's also the alternative of just eating intuitively which is the ideal, but that
requires you to know what food you can eat safely without going into a full on binge, or over-eating because the food is so delicious, and this can be really tricky for a lot of people.
And yes, this even includes having an e.g. steak with some BBQ sauce on it.
The sauce will be filled with a lot of ingredients (some chemical maybe) and sugar which will make you overeat on even a steak because it's so good you cannot stop. (Definitely been there myself many times. Some sauces can be amazing, especially certain ones in mind from Korea, or even plain gochujang ngl)
Now try that with even more delicious things like pasta, potato, rice, bread with sauces and a lot of additives and sides you mix with them and you can see where people start to overeat heavily and over months and years you suddenly pack on the weight.
As for the once a week fast food day, maybe!
I say maybe because what does a day mean? Do we talk a single dinner where you have some delicious cake and a pizza and then stay healthy rest of the week? Or an entire day where you go full on binging on your breakfast, lunch, dinner, snacks.
Then there's food addiction, knowing myself and many other food addicts we can severely struggle with having something one day and then being clean the rest of the time, whereas some people can eat 1/4th of a Snickers bar and put it away with no cravings towards it. (I envy those people lol) If you're struggling with addiction like this, that's something to be wary of.
Alternatively it
might help to have a little something a day. Like one piece of a chocolate a day and not more beyond that, which imo is fine as well unless you're a purist and want to go all in on being perfectly clean.
My own food addiction has been long and still ongoing.
Initially I was trying to be ultra strict, and I was, but then I'd have days and weeks of binging up to 10kcal a day (I can eat a lot easily lol), but I kept adjusting my strictness, coping mechanism, avoid my food triggers (foods that lead to eventual binging), my relationship with food, which foods I can allow myself to eat as an alternative e.g. 86-100% chocolate with some Greek yoghurt and cinnamon and berries vs ice cream would give me the same satisfaction almost, enough to where I wouldn't crave unhealthy stuff, but it'd fill me up and actually be healthy as opposed to actively harming my health.
Now I do binge still, but it's less than before and I do it a few times a month at least.
I do hope I can eventually go down to 0, and have managed that for some months in my life, but again, an ongoing process and as long as I make progress that's what matters for me.
As others have said, you should definitely focus on self-love as well, but as someone who can relate to you, I will say my self love definitely improved after I became lean, but
only after I
also started focusing on being healthy and having a healthier relationship with food and my body, providing it with the adequate energy and nutrients it needs, for what it is that I am trying to achieve.
/sorry for rambling.

I don't know much if anything about chu so it's hard to fully know what to recommend for you and which steps you should start from!