Hello everyone.
Its been a week since i joined gym and noticed this thing during my squats.
My back is leaning forward a lot during squats. I am squating without any bar and weights but still my is decling a lot when i go down.
Is there any way to solve this?

It's hard to say what, if anything, is the issue without a video. Forward lean during a squat isn't necessarily wrong.

What are you expecting to happen?

It's hard to balance without any weight at all, holding a 10kg / 20 lb weight in outstretched arms actually makes it easier.

Best of all try using an empty barbell (20kg / 44 lb) on your back, to learn the form.

Don't let your knees come forwards over your toes!! Keep them roughly over your heels.
Concentrate on moving like you are about to sit back onto a chair. Keep weight on back of mid foot with noticeably more weight on heels than toes.

See some YouTube videos on Squat form if that helps. There will be a bit of forward lean.

That's not a necessity.

That's a bit of an understatement. A certain amount of forward lean is absolutely needed. Otherwise you fall on your ass.

You need enough forward lean to keep the bar centered over mid foot. Your weight should be equally distributed over your whole foot. If your weight is on your toes, and the heels want to lift off at the bottom position (common beginner problem), you have too much forward lean. If your weight is entirely on your heels, you have too little forward lean.

Even when you squat down to just sit outside of the gym, you notice how you move your hands forward as you descend? It is to counter-balance yourself so you don't fall over.

What almost everybody said I agree with, except for the knees past the toes. Knees can go past the toes, especially in high bar squatting, as long as you are not half-squatting.

We should probably mention depth also... I'm not wanting to get into a debate on how deep is the "best" squat, for now I only want to mention the *minimum* depth.

Assuming you have no medical problems you didn't mention to us (if so see a doctor before exercising). You really must aim to squat so that the top of your thighs are parallel with the ground or perhaps a little bit lower.

Better to use less weight or do less reps and go to just below parallel (or better) than to do more reps or more weight (or both) but only squat the top part of the move.

I'm sure you will see people in your gym who look strong but don't go quite that deep in their squats. Ignore them, and go to just below parallel.

If you get any weird pains in knees, lower back, etc, stop and get someone to check your form.

Ok I'll come clean.. what I said about knees is a cue to help you learn correct form as a novice, if you watch my squat (especially high bar) you'll catch me with my knees coming forward a little. Just *try* thinking about keeping knees back, keep your backside shoved backwards, straight spine, and sitting back in an invisible chair

https://youtu.be/bs_Ej32IYgo
Alan Thrall on how to squat