Gotta at least have a name bro lol. Without a name what do you want us to do?
But if you don't have that, you will want to find some movie clubs in Maltese and ask around there. You can also try to find some Maltese movie groups too. One thing I've found is that there's always a group interested in everything. Vintage vacuums? Yeah, there are people that deal in just them and likely know every vacuum made between 1920 and 1960. You just have to find them.
When you have the name, find out who their distributers were or find out what studio produced it. Then reach out to them.
Sadly most go bankrupt so the originals are lost or even destroyed. There are plenty of indie films with some decently big names that end up this way too (I've been trying to find a decent copy of "Live Free or Die 2006" since it was released but sadly that movie looks to have evaporated despite having some huge names attached).
Try searching it on https://btdig.com/, a DHT search engine. Most of the torrents there are very old and have barely any seeds. Be patient. The last thing I downloaded from there took 1-2 weeks to complete.
I've had good experience stitching parts together with handbrake. Honestly, it's much easier than importing to an editing suite (and getting the export settings right 😬).
Davinci resolve will allow you to do what you wish, just don't get intimidated by the interface, and look up the task you want on yt very straight forward and I only use 1/100th of its power
Sure, but if you install DR, then you have DR to do other things. Like chase that YouTuber dream, or field annoying calls from your great aunt who knows you can edit videos to digitize her parents super 8 family videos that are have rotten.
It is a program I have used to make bad tutorials and bad compilations (I have no skill hehe). It was a suggestion and maybe after doing this they may go deeper into video editing/making, or not. Like I said I barely make use of all its power, op will decide what they will do
"Obscure Maltese movie" is ridiculously generic and impossible to identify anything from. Perhaps if you supplied some context of the movie, the plot or something?