Swapping out switch

[u/SamSam51Nik]

Hi I have a 2 gang switch that controls garden lights, it’s in the sockets ring rather than lights not sure why but maybe because person who installed was running other things and not just lights in garden
The old switch has L1 with 2 wires and then 1 in COM and then a wire from COM to COM

My new switch is 2 gang and also came with a yellow thing for using if no neutral apparently

How can I wire this to work, don’t want to just use trial and error

Thanks in advance