Stance after air to coil spring suspension switch?

Vehicle details: 4WD / AWD

Once I switched the air for coil, the car sagged from the front .
With distances from the ceneter of wheel hub to inferior fender border mentioned for the front and rear,
Front is 44.5 cm
Rear is 50.5
Which is obviously strange ?!

One thing to mention is that the parts used are not official for the specific trim, rather, chosen randomly, v6 front strut with its coil spring and for the rear coil spring, which i already replaced it twice therafter, thinking that wrong rear coils is the culprit,
But nothing changed,
Last,and beacuse of the lower stance for the front making the bumper hitting almost always the low obstacles easily, I was enforced to put a spacer. Of 3.5 cm.

Now the distances for the front and rear are
Front 49.5 cm.
50.5 cm.

But i was told that these aftermarket procedures i had done to my car might be putting extra load on the fornt suspenion geometry and makes them wear orematurely.

My questions are :-
-Why did the car sagged from the front compared to the rear ?
-is the spaced and related procedure accepted approach to correcting the front sag ?
- what is your advice if any , to correct the mess I had done to my car, excluding as much as possible switching back to air suspension.

- if it is related to wrong parts used , In Iraq no one is much specified to choos the correct part numbers.
This is the main problem I am facing.

My car is 4*4 JGC summit 2019.

Best regards.
L

Hello, it looks like to me all you need is the stock struts and springs for the non air ride suspension and just bolt them in and you should be good to go, please remove the spacers for the struts as well, you will not need them with the correct struts, here are the correct units you need. thanks for the videos they helped.

https://amzn.to/4yGp4R7

Check out the images (below). Let me know how it goes

I am sorry.
But Maybe I cant order from amazon.
Can you provide me a way to properly select the correct rear and front coil springs and struts ?

Because the shops are unable to match the proper part numbers correct for the specific car trim level nor they depend on part numbers at all..

Many shops for example suggested installing v8 front coils ( with 7 coils and wider metal ) instead of the already present v6( with 10-11 coils with narrower metal ).

But again I doubt how correct is that.

Is it correct to choose the right coil springs based solely on the no. Of coils they have ?

Or does that exclusively determine the front ride hight ?

The struts themselves have nothing to do with the ride height?

Best regards.

Is it correct to choose the right coil springs based solely on the no. Of coils they have ? - No this can vary between manufactures, I would get a set from one of these suppliers.

KYB SR4798 Front Left Strut-Plus Assembly $180.50 · Tuning4 Auto Parts
KYB SR4797 Front Right Strut-Plus Assembly $263.73 · FastHemis

Let me know how it goes.