Howdy,
I made some changes to your question to make it fit better with [[Info:Asking Great Questions|iFixit’s guidelines for questions]]. To answer your question, the processor is soldered to the laptop’s motherboard, so you’ll either need to replace the whole motherboard, which is like buying a whole new laptop. Instead I would highly recommend upgrading the RAM and [parts|Lenovo IdeaPad 1-15ADA7|storage|itemtype=storage].
Good luck with your laptop!