Why don’t Laravel foreign keys work in migration?

I am trying to link 2 tables in a laravel migration. But I keep getting the General error: 1215. And I don’t know why.

<?php

use IlluminateDatabaseMigrationsMigration;
use IlluminateDatabaseSchemaBlueprint;
use IlluminateSupportFacadesSchema;

return new class extends Migration
{
    /**
     * Run the migrations.
     */
    public function up(): void
    {
        Schema::create('videos', function (Blueprint $table) {
            $table->bigIncrements('videoNr');
            $table->char('filenaam');
            $table->timestamp('upload_datum')->useCurrent();
            $table->integer('oefNr')->foreign();
            $table->foreign('videoNr')->references('videoNr')->on('videoNr');

        });
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::dropIfExists('videos');
    }
};

This is the code of the one I am trying to link to the other one.

<?php

use IlluminateDatabaseMigrationsMigration;
use IlluminateDatabaseSchemaBlueprint;
use IlluminateSupportFacadesSchema;

return new class extends Migration
{
    /**
     * Run the migrations.
     */
    public function up(): void
    {
        Schema::create('exercise', function (Blueprint $table) {
            $table->bigIncrements('oefNr');
            $table->char('oefening_naam');
            $table->char('uitleg');
            $table->integer('videoNr')->foreign();
            $table->char('accountNr');
            
        });
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::dropIfExists('exercise');
    }
};

This is the code for the one I am trying to link to.

I have also tried changing where the key is. So I put it in exercise instead of videos. But the problem with that is that it first creates the exercise table and then the I get a different error. Because it tries to link to a table that doesn’t exists yet.

SQLSTATE[42S21]: Column already exists: 1060 Duplicate column name ‘videoNr’ (Connection: mysql, SQL: create table videos (videoNr bigint unsigned not null auto_increment primary key, filenaam char(255) not null, upload_datum timestamp not null default CURRENT_TIMESTAMP, oefNr int not null, videoNr bigint unsigned not null) default character set utf8mb4 collate ‘utf8mb4_unicode_ci’). This is the first error code.

SQLSTATE[HY000]: General error: 1215 Cannot add foreign key constraint (Connection: mysql, SQL: alter table videos add constraint videos_videonr_foreign foreign key (videoNr) references videoNr (videoNr)) I have also encounterd this error message.