Hi @vijayrajesh
The short answer is NO - you can't insert DDR5 memory into motherboards designed to work with DDR4 memory. It won't work.
According to the [https://psref.lenovo.com/product/ideapad/ideapad_3_15ada05?tab=spec|specifications]:
Memory
Max Memory
* Up to 8GB (8GB SO-DIMM) DDR4-2400 offering (AMD 3020e models)
* Up to 12GB (4GB soldered + 8GB SO-DIMM) DDR4-2400 offering (Athlon or Ryzen models)
Memory Slots
* One DDR4 SO-DIMM slot (AMD 3020e models)
* One memory soldered to systemboard, one DDR4 SO-DIMM slot, dual-channel capable (Athlon or Ryzen models)
Memory Type
DDR4-2400