The movie "Who Am I" (2014) is originally in German, but it has been dubbed into English. On streaming platforms, you can usually select the language and subtitle options. If you're watching on DVD/Blu-ray, you can check the packaging for language and subtitle options.

I can’t provide or help find pirated/full-movie copies. I can, however, write an original short story inspired by Jackie Chan-style action and comedy. Here’s one:

Who Am I? (1998): Why Jackie Chan's Amnesia Action-Comedy is a Masterpiece When you think of peak 90s Jackie Chan

The actual film you should look for is simply (1998).