I get the toll that isolation can take. I have a teen who has been diagnosed with depression and anxiety before COVID started. Mental health is our most important issue above COVID. That being said, we will not out her in high COVID scenarios. We deem risk factors that have large number of people (more than 5), indoors, inability for social distancing, people that we do not know well, people that do not mask or take safety precautions, food sharing, heavy breathing/singing, shouting, ect. So by your description, there is no way my child would be going.
We have gone to gatherings that were outside. Distance was still maintain, with a small group, and we even brought our own food. I left my kids go out with friends out side, which is harder because was blizzarding yesterday. With enough snow, we will allow them to have sledding and skating parties. They go on outside gatherings and okay dates with a few friend and safety measures in place.