What are good datepickers for laravel?

There are a variety of date/time pickers out there, but honestly, it depends on your requirements. Tempus Dominus works fine with a little configuration, but it has some issues, I agree.

If you need to support older browsers, then you'll need to use a package that supports modern browsers, and then user the user agent to determine whether to just show a plain datetime input or the package input etc.

Honestly, I stick with modern date/time pickers, I have no time for supporting older browsers anymore, so almost any vue / bootstrap 4 datepicker you come across will be fine, if that is your approach.

not really a laravel concern?

You are probably best one that works with your chosen front-end css

or just use the native html5 date function

datepickers have nothing todo with a php framework like Laravel. But I like: https://flatpickr.js.org/examples/

it has no dependency of jQuery and it on mobile devices it automatically uses the native datepicker of the OS of the phone (can be turned off though).

You can use bootstrap datepicker and customise it according to your nees