How to disable bouncing animation for pageview in flutter

Question

Why do my codes have bouncing animation just for six items, not 7, 8, or 9, here is the full code, I don't want this animation:

  Widget courtsTitle(WidgetRef ref, BuildContext context) {
    double deviceWidth = MediaQuery.of(context).size.width;

    courts = ref.watch(courtProvider).courtsByClubId;

    return SizedBox(
      height: 56,
      child: PageView.builder(
        itemCount: courtLengthCalc(ref),
        scrollDirection: Axis.horizontal,
        controller: pageController,
        physics: const NeverScrollableScrollPhysics(),
        onPageChanged: (value) => setState(() => currentPage = value),
        itemBuilder: (context, index) => Row(
          mainAxisAlignment: MainAxisAlignment.start,
          children: List.generate(courtLengthCalc(ref), (index) {
            int currentIndex = (index + currentCoachState());
            return Container(
              width:
                  currentIndex == 0 ? (deviceWidth * 0.21) : deviceWidth * 0.14,
              padding: const EdgeInsets.symmetric(vertical: 10),
              decoration: BoxDecoration(
                border: Border(
                  right: BorderSide(
                      color: Colors.grey, width: currentIndex == 0 ? 0 : 1),
                  top: const BorderSide(color: Colors.grey, width: 1),
                ),
              ),
              child: Center(
                child: Text(
                  courts[currentIndex].name,
                  style: const TextStyle(fontSize: 18),
                ),
              ),
            );
          }),
        ),
      ),
    );
  }

  void nextPage(WidgetRef ref) {
    courts = ref.watch(courtProvider).courtsByClubId;

    if (isForwardCourt) {
      pageController.nextPage(
        duration: const Duration(microseconds: 1),
        curve: Curves.easeInOut,
      );
      currentCoachesNum++;
      courtButtonsChecker++;
    }
    isForwardCourt = courtButtonsChecker * 5 < courts.length;
    isBackCourt = courtButtonsChecker > 1;

    setState(() {});
  }

  void previousPage(WidgetRef ref) {
    if (isBackCourt) {
      pageController.previousPage(
        duration: const Duration(microseconds: 1),
        curve: Curves.easeInOut,
      );

      currentCoachesNum--;
      courtButtonsChecker--;
    }
    isForwardCourt = courtButtonsChecker * 5 < courts.length;
    isBackCourt = courtButtonsChecker > 1;

    setState(() {});
  }