Drilled into electrical cable...

I think I've drilled into some electrical cable but nothing tripped. I have done some googling and I probably shouldn't leave this exposed and have seen wago connectors or junction boxes suggested. Is one better than the other? This hole is about 4cm above tiling, if there is anything really small I can use to fix this it would save me ruining the tiles for now. Next time I won't drill any holes above wall sockets 😂

Sorry for blurry pictures, it's much easier to take pictures of big holes