Facebook Lite App: Lots of Direct Entries

We have started an international Facebook Ads campaign.

Now the situation is that around 80% of the visitors on the campaign entry page are direct entries in Matomo.
Only 15% are with the campaign parameters we use, the rest with the “Social Network” channel (Facebook).

The strange thing is that the Matomo Visitor Log does not show a browser for visitors with Direct Entry.

However, when I export and analyze the log, I see that the browser “Facebook Lite” is stored there for this visitors.

According to my internet search, Facebook Lite is a data-efficient lightweight app from Facebook.

My question to you now is whether you know whether “Facebook Lite” removes campaign parameters (e.g. _utm) before the visitor comes to our website?

Regards Udo