Enemies behaviors: movement, attack and kill (matter)

Phaser 3
1

Hello there,
I created some object boxes in Tiled, I created my player and then I created my enemies like this:

objectsLayer.objects.forEach(objData => {

        const { x = 0, y = 0, name, width = 0, height = 0 } = objData;

        switch (name) {

            case 'player-spawn': {

                //adição do player (frame 0, imagem 0 na sprite)
                this.player = this.matter.add.sprite(x + (width * 0.5), y, 'player', 0);
                this.player.body.label = 'player';
                this.player.setCollisionGroup(2);
                this.player.setFixedRotation();
                this.player.setFriction(0);

…

case 'golem1_1': {
> 
>                     this.golem1_1 = this.matter.add.sprite(x + (width * 0.5), y, 'golem1', 0);
>                     this.golem1_1.setBody({
>                         type: 'rectangle',
>                         width: 130,
>                         height: 200,
>                     });
> 
>                     this.golem1_1.setFixedRotation();
>                     this.golem1_1.setScale(.15);
> 
>                 } break;

I have more enemies, but I created them individually.

Movement:
I want to make them move from one side to another and when they collide with a wall I want them to turn the other way, but I don’t know how to do it and haven’t found the solution.

Kill enemy:
I would like to make the player kill the enemy jumping on top of it, but I don’t know how to do it using matter.

Enemy attack:
I would also like to make the enemy attack the player when the player collides with the enemy, on the sides.

I could make the enemy collide with the player using something like this, but it wouldn’t work the way I want:

this.matter.world.on(“collisionstart”, (e, o1, o2) => {

        if ([o1.label, o2.label].indexOf('golem1_1') != -1 &&
            [o1.label, o2.label].indexOf('player') != -1) {
            this.playerhp--;
        }
    });

I believe the collision should be on create, so how would I make the enemy attack animation trigger on collision?

One more thing, when I hit the golem with the player, the golem falls even with fixedRotation, I don’t know why.

I need help as soon as possible, If you can.
Thanks