I’ve had good luck with my extender, it’s a TP brand and I needed one with an Ethernet port to run an Aruba device. If you have fiber or cable they work fine, DSL will struggle. If you can, look into a MESH system, easy to hook up, replaces your current router and provides seamless high speed through the house, and you can place pods in different areas to improve the signal. More expensive than an extender but better performance.