How to disable keyguard lock on android fullscreen notification

I'm developing an alarm like app that sends notifications with fullscreenintents

If the notification is sent when the phone is locked i want the fullscreenintent to cover the screen without needing to unlock the phone and without the keyguard lock appearing, just like in a normal alarm app.

I think I'm requesting the right permissions:

<uses-permission android:name="android.permission.WAKE_LOCK" />

And I'm using both of these functions when the activity starts in hope one of them works:

private fun showWhenLockedAndTurnScreenOn(activity: Activity){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
    activity.setShowWhenLocked(true)
    activity.setTurnScreenOn(true)
    val keyguardManager = activity.getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager
    keyguardManager.requestDismissKeyguard(activity, null)
} else {
    activity.window.addFlags(
        WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD or WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
                or WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
    )
}

and

fun Activity.turnScreenOnAndKeyguardOff() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
    setShowWhenLocked(true)
    setTurnScreenOn(true)
} else {
    window.addFlags(
        WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
                or WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON
    )
}

with(getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        requestDismissKeyguard(this@turnScreenOnAndKeyguardOff, null)
    }
}