Wifi keeps disconnecting after startup or restart
I am facing the problem from the day I bought the new MacBook Pro (13-inch, 2019, Two Thunderbolt 3 ports) edition. My home's D-link router that I am using for last 3 years gives no problem to any of my device, even my old macbook air 2013 laptop. But this laptop connects to the wifi instantly after it starts, but within 2-3 seconds it gets disconnected. Then I manually click on wifi icon and connect the router. It connects and again in 3 seconds, it gets disconnected. Initially I thought, there's may be some compatibility issue with the router. So I turned on my Mi A3 mobile's hotspot and connected to the laptop. It got connected and there was no issue. Then I reconnected the home router and surprisingly it remain connected. So everytime I restart macbook, I have to follow same process to keep my home router connected. I want to get rid of the problem. Everytime I see any update for OS, I think that this will be solved, but no luck since last 4 months. My OS is MacOS Catalina 10.15.6. Anyone know how to solve the issue, please let me know
MacBook Pro 13″, macOS 10.15