How do I fix my network cable port?

Hi guys

I cleaned the network port of my laptop using instructions I found on the web. It is being several years since I bought this laptop and ever since the port worked properly. But after I have cleaned it the port doesn’t seem to work well and the light indicator which indicates the connection of the port and cable doesn’t work as well. Since I have no knowledge regarding that I am afraid that I will make things even worse if I try to fix it without any guidance. So before taking, this to a store that repairs this problem is there anything I can do to fix this issue from my end?