Home Internet Overheating

I recently got T-Mobile Home Internet Wi-Fi. It has been two days, and I've noticed that many times my internet just drops/lags for few seconds but it suddenly comes back. I sometimes use it for gaming, however it is really annoying that sometimes there is random lag spikes or even drops that make lose connections during games. I've been doing some research to find a solution, but the closest thing to my issue is what other similar people have. I'm not sure if I try setting up some fans with the modem could solve my problem. Which it might be an overheating issue, which I'm assuming.