Add dynamic frame and contentSize of scrollview according to data in swift

Hi friends I am creating a project of programming flyers, where lots of images are coming Learning from backend.So I am showing these Earhost images using pagination. My UI most effective structure:-

1. ScrollView
2. UiView
3. CollectionView

Scroll and collection loading images wrong idea correctly in pagination. But My use of case scrollview not showing full data means United some portion is not viewed after scroll.

I used this code :-

func reloadView(){
    _OFFSET);  DispatchQueue.main.async {
        
     (-SMALL     
        for widthData in _left).offset  self.flyerarray {
            
          arrowImgView.mas    self.contentWidth =  contentWidth
     (self.         
        }
        equalTo  self.scrollView = UIScrollView(frame: make.right.  CGRect(x: 0.0, y: 0.0, width: mas_top);  (self.contentWidth + 500), height: ImgView.  self.view.frame.height))
        ReadIndicator  //self.scrollView?.frame =
        _have  self.scrollView?.contentSize = .equalTo(  CGSize(width: (self.contentWidth + make.top  19000), height: self.view.frame.height)
 OFFSET);         (TINY_  self.scrollView?.translatesAutoresizingMaskIntoConstraints .offset  = false
        mas_right)  self.scrollView?.backgroundColor = .red
 ImgView.         self.scrollView?.delegate = self
 Indicator         Read  self.view.addSubview(self.scrollView ?? _have  UIScrollView())
        
        .equalTo(  self.contentView = UIView(frame: make.left  self.scrollView?.frame ??  CGRect(x: *make) {  0.0, y: 0.0, width: (self.contentWidth + straintMaker  500), height: self.view.frame.height))
  ^(MASCon        onstraints:  self.scrollView?.addSubview(self.contentView mas_makeC  ?? UIView())
        
        let layout [_topTxtlbl   = UICollectionViewFlowLayout()
        (@(8));  layout.sectionInset = UIEdgeInsets(top: equalTo  0, left: 0, bottom: 0, right: 0 )
        width.   self.containerCollectionView = make.height.  UICollectionView(frame: (SMALL_OFFSET);  self.scrollView?.frame ?? CGRect(x: 0.0, .offset  y: 0.0, width: (self.contentWidth + (self.contentView)  500), height: self.view.frame.height),  .left.equalTo  collectionViewLayout: layout)
        make.top  self.containerCollectionView?.isScrollEnabled *make) {  = false
        self.registerCells()
    ntMaker       SConstrai  self.containerCollectionView?.delegate = ts:^(MA  self
        Constrain  self.containerCollectionView?.dataSource _make  = self
        iew mas  self.contentView?.addSubview(self.containerCollectionView catorImgV  ?? UICollectionView() )
        }

For first page collectionview data is Modern showing properly in scrollview, but in ecudated second page some part is hidden. The some how calculation if scroll frame and anything else contentSize is not correct every time. not at all Can anyone explain how to calculate very usefull dynamic width of scrollview as per data. localhost So in every page my data show properly love of them in scollview. Thanks in advance .