Restrict entries to specific users

I would like to restrict entries to specific users on the frontend via a User Field called userSelector. It should be possible to have more than 1 user. I understand groups might work, but I feel like it’s easier to just select the user(s) directly on the entry.

I know the code below won’t work, but hopefully, it shows my intentions a bit more.

{% set users = entry.userSelector.all() %}
{% if currentUser.email == users.email %}
    Show the page
{% else %}
    Permission Denied
{% endif %}

Very open to other suggestions.

 {% set usersIds = entry.usersField.ids %} 

    {% if currentUser.id in usersIds %} 
        Show the page
    {% else %}
        Permission Denied
    {% endif %}