what he saidLooks likeone of the many copies of the basic Baby Browning design. To field strip for cleaning, remove magazine and make sure the pistol is empty! If it has a 'take down' cut on the left side of the slide, try pulling the slide back til the lever can be pushed up into it to lock it back. Then the barrel may be able to turn (try either direction) to get it out of it's lock grooves. At this point, the barrel is pulled out the front, then the slide comes off forwards too. Wiith the grip panels removed, this will allow youto clean and lube the little pistol. Assembly is the reverse.
Have you tried shooting it? Use a magnet to see if the frame is steel or alloy - many cheap pistols use 'zamak' zinc alloy. I'd feel safer with steel.