Slow Wi-Fi After Router Upgrade – Any Tips to Speed It Up?

So I recently swapped out my old router for a newer model, hoping to get faster internet around the house. But strangely, my Wi-Fi feels slower than before, especially on my laptop and phone. I’ve tried rebooting the router a few times, moved it to a more central spot, and even updated the firmware, but no luck. I’m not super tech-savvy, but I did notice the new router has both 2.4 GHz and 5 GHz bands. Not sure if my devices are connecting to the best one. Also, I’m using the same ISP and plan as before, so it can’t be that. Has anyone else run into this after upgrading their router? Any easy settings I should check or tweaks to boost Wi-Fi speed without buying another gadget? Would love to hear what worked for you!