you might be interested in this preliminary research. they think there's stem cells in them there ovaries. there's one or two mammals i think they saw making new eggs spontaneously from ovary stem cells.

Human Research Another study, presented at a conference in 2016, raises the intriguing possibility that certain medications may be capable of stimulating the ovary to create new eggs. In this study, women who had been given a particular set of chemotherapy agents (known as ABVD) were found to have significantly more eggs in their ovaries than healthy women who hadn’t received these medications. Women who received a different set of chemotherapy agents, which is known to cause infertility, had far lower numbers of eggs. This strongly suggests that the adult human ovary is also capable of producing new eggs.

What Does This Mean For Women? So far, this is only preliminary research. Although there is great promise for the future of fertility medicine, this research has not yet led to any treatments to help those struggling with infertility. In the future, researchers hope to produce treatments based on these discoveries. For example, medications based on those used in the ABVD chemotherapy regimen might be capable of increasing egg counts in women with low ovarian reserve, without producing too many side effects. We’re excited about the potential for new treatment methods.

maybe this study that might be about sticking some stem cells in the ovaries maybe shows new eggs in humans. i'm not sure what the verdict is yet, but there's new interesting info out there about women making eggs. i don't think there's any solid evidence yet, but as a non-medical person wouldn't understand it until it's common knowledge and not just preliminary stuff in jargon i don't know.

i signed up just to tell you about ovary stem cells since you seem interested in the gametes.

https://onlinelibrary.wiley.com/doi/full/10.1111/cpr.12938