Here are my stats and a brief summary of the problem: MacBook Pro 15 inch Touch Bar 2018 (MR932. Core i7 2.2 GHz, 16 GB, 256 GB, Radeon Pro 555X) running Mojave v10.14.6. Sometimes after unused for a while, whether I leave it opened or get it to sleep, I can't access the internet although still connected to the wifi. I can only connect to the wifi after a restart. Also sometimes, right after I open it, the damn thing freeze and I get the spin ball of death, but it usually goes away after 30 seconds or so. This doesn't happen all the time but it happens a lot. Any suggestion for fixing these problems? Thanks in advance.