Xcode – How to stop a Lottie animation manually

I use the Lottie animation library in XCode. But when I go to another page, the animation is running in the background. When I go back the main page, the animation is running twice and there is too much RAM being consumed. How can I fix this problem? and how can I stop the animation after a specific time?

import UIKit
import Lottie

class CoffeeSpecialFortunePageVC: UIViewController {
    
    @IBAction func PopUpIn(_ sender: Any) {
        animateIn(desiredView: PopupBlur)
        animateIn(desiredView: popupView)
        animation()
    }
    @IBAction func SuccesBtn(_ sender: UIView) {
        animateOut(desiredView: PopupBlur)
        animateOut(desiredView: popupView)         
    }
         
    @IBOutlet var popupView: AnimationView!
    @IBOutlet var PopupBlur: UIVisualEffectView!

    override func viewDidLoad() {
        super.viewDidLoad()
        
        view.backgroundColor = UIColor.purple
        PopupBlur.bounds = self.view.bounds
        popupView.bounds = CGRect(x: 0, y: 0, width: self.view.bounds.width * 0.9, height: self.view.bounds.height * 0.4)
        // Do any additional setup after loading the view.
    }
    func animation() {
        popupView! = .init(name: "check1")
        popupView?.frame = view.bounds
        view.addSubview(popupView!)
        popupView?.play()
        popupView.contentMode = .scaleAspectFit
        popupView.frame.size.height = 350
        popupView.frame.size.width = 350
        popupView.center.x = view.center.x
        popupView.center.y = view.center.y 

             
    }

    func animateIn(desiredView: UIView) {
        let backgraundview = self.view!
        backgraundview.addSubview(desiredView)
        desiredView.transform = CGAffineTransform(scaleX: 1.2, y: 1.2)
        desiredView.alpha = 0
        desiredView.center = backgraundview.center
        UIView.animate(withDuration: 0.3, animations:{
            desiredView.transform = CGAffineTransform(scaleX: 1.0, y: 1.0)
            desiredView.alpha = 1
            
        })                       
    }
    func animateOut(desiredView: UIView) {
        UIView.animate(withDuration: 0.3, animations: {
            desiredView.transform = CGAffineTransform(scaleX: 1.2, y: 1.2)
            desiredView.alpha = 0
        },completion: {_ in
            desiredView.removeFromSuperview()                
            
        })            
    }    
}