Pages reposting viral content without credit or permission

I posted a video on TikTok a few months ago of my baby goat that unexpectedly went viral and got around 500k likes. I just came across a large Facebook page from Poland (about 400k+ followers) that reposted it and it got close to 1M likes, but it wasn’t credited and they didn’t ask permission.

I’m the original creator and I’m unsure what to do next.

My main concerns:
• I wanted to expose them on my TikTok, but I don’t want it to turn into drama or risk my account getting flagged/limited
• I was going to file a copyright report, but apparently my full legal name would be visible to them and I feel it’s too late anyways.
• My TikTok is somewhat anonymous (just my first name)

What’s the best way to handle situations like this?
Is it still worth filing a takedown, or is it usually better to leave it since it already went viral?

I had downloads turned off on my videos, but people are still screen recording and reposting without credit or permission. I wish TikTok had an option to add watermarks after posting.