Dear Hamzeh,
Wa alaikum assalam
I attempt to take best precautions whilst remaining cognizant of verse 65:16 and the need for 'istata'a' (best endeavours / capability).
Ultimately, it all depends on the establishment, particular gathering, the laws of the particular community / country (and expected observance) and one’s best understanding of where the meat in a particular context is most likely to be sourced from and prepared.
I do believe that one should commit to some sort of due diligence / enquiries, whilst recognising the limitations of best endeavours.
In certain contexts, there will be an expectation of greater observance of Islamic dietary laws with formal adherence to monitoring committees, standards et al, and there will be other situations, where the process can be expected to be somewhat lax and the claimed adherence somewhat dubious. This assessment of what action to take will inevitably be an individual matter as there will be many variables to consider.
Of course, one cannot in the main, be expected to witness every meat item being slaughtered and certainly when in gatherings or acquaintances amongst believers particularly, some element of trust will most likely play a part. However, such trust does not imply that one becomes complacent.
I hope that helps, God willing
Joseph