Can I use M5 Deco with my existing router Archer AX20?

Hello,

I have an Archer AX20. My room that sits to the end of the house can barely get any signal. I've read that I can solve this problem if I create a mesh wifi, but I don't want to throw away my existing router.

If I buy a Deco M5, can I use it as a node to connect to the AX20 to create a mesh wifi?

Sorry, I'm noob in networking, not sure if my question make sense.