How to embed admob in kotlin project?

Question

Kotlin

There is a project created in android studio on kotlin, when embedding admob, the project is going to crumble, but tell me, can I put ads in the wrong section of the code? I inserted the ad 100% correctly. By creating a new project, the built-in advertising works and the application starts.

override fun onCreate(savedInstanceState: Bundle?) {
        AndroidInjection.inject(this)
        super.onCreate(savedInstanceState)
        setContentView(binding.root)
        viewModel.bindView(this)
        onNewIntentIntent.onNext(intent)

        toggle.syncState()
        binding.toolbar.setNavigationOnClickListener {
            dismissKeyboard()
            homeIntent.onNext(Unit)
        }

        // add admob
        val adView = AdView(this)
        MobileAds.initialize(this) {}
        val adRequest = AdRequest.Builder().build()
        adView.loadAd(adRequest)

        adView.adListener = object: AdListener() {
            override fun onAdLoaded() {
                // Code to be executed when an ad finishes loading.
            }

            override fun onAdFailedToLoad(adError : LoadAdError) {
                // Code to be executed when an ad request fails.
            }

            override fun onAdOpened() {
                // Code to be executed when an ad opens an overlay that
                // covers the screen.
            }

            override fun onAdClicked() {
                // Code to be executed when the user clicks on an ad.
            }

            override fun onAdLeftApplication() {
                // Code to be executed when the user has left the app.
            }

            override fun onAdClosed() {
                // Code to be executed when the user is about to return
                // to the app after tapping on an ad.
            }
        }


        itemTouchCallback.adapter = conversationsAdapter
        conversationsAdapter.autoScrollToStart(binding.recyclerView)

        // Don't allow clicks to pass through the drawer layout
        binding.drawer.root.clicks().autoDisposable(scope()).subscribe()

        // Set the theme color tint to the recyclerView, progressbar, and FAB
        theme
                .autoDisposable(scope())
                .subscribe { theme ->
                    // Set the color for the drawer icons
                    val states = arrayOf(
                            intArrayOf(android.R.attr.state_activated),
                            intArrayOf(-android.R.attr.state_activated))

                    resolveThemeColor(android.R.attr.textColorSecondary)
                            .let { textSecondary -> ColorStateList(states, intArrayOf(theme.theme, textSecondary)) }
                            .let { tintList ->
                                binding.drawer.inboxIcon.imageTintList = tintList
                                binding.drawer.archivedIcon.imageTintList = tintList
                            }

                    // Miscellaneous views
                    listOf(binding.drawer.plusBadge1, binding.drawer.plusBadge2).forEach { badge ->
                        badge.setBackgroundTint(theme.theme)
                        badge.setTextColor(theme.textPrimary)
                    }
                    binding.syncing.progress.progressTintList = ColorStateList.valueOf(theme.theme)
                    binding.syncing.progress.indeterminateTintList = ColorStateList.valueOf(theme.theme)
                    binding.drawer.plusIcon.setTint(theme.theme)
                    binding.drawer.rateIcon.setTint(theme.theme)
                    binding.compose.setBackgroundTint(theme.theme)

                    // Set the FAB compose icon color
                    binding.compose.setTint(theme.textPrimary)
                }



        // These theme attributes don't apply themselves on API 21
        if (Build.VERSION.SDK_INT <= 22) {
            binding.toolbarSearch.setBackgroundTint(resolveThemeColor(R.attr.bubbleColor))
        }




    }