Will DDR5 RAM work on a DDR4 motherboard?

Take a stick of DDR4 memory, place it onto the converter card, and insert it into a motherboard's DDR5 slot However, if the idea is simple

DDR4 sticks won't fit in DDR5 slots either So, if you're planning to keep your current motherboard, sticking with DDR4 is the way to go 5

does nintendo switch lite have game card slot DDR4 sticks won't fit in DDR5 slots either So, if you're planning to keep your current motherboard, sticking with DDR4 is the way to go 5

does it matter which m2 slot i use DDR5 isn't backwards compatible, though, and you can't slot DDR5 memory kits on motherboards that only support DDR4 either fitted with all