It should still be useable, you’d need to figure out what the axle was, which can be slightly hazardous if you’re testing them and it gets cross threaded 😅 the ball bearing is most likely a Size C or '0.250 x 0.500 x 0.188 in' those are the most common and my best guess based on the picture. If you search size c yo-yo bearing you should find a wide variety of options around 8usd. I tried searching for your model of yo-yo but nothing came up so trial and error would most likely be needed to find the axle size