Ping spikes during multiplayer gamers

I recently moved out of on-campus housing and into an apartment. Currently, I am paying for the 1GB/s home wifi service with the most updated Panoramic modem/router. I am also taking advantage of the 5G wifi service as well. Despite that, I get ping spikes while paying for esport titles like Valorant or Overwatch. It goes from a steady 20-30ms to 150ms every 30 seconds to 1 minute of gameplay and makes playing competitive shooters unbearable. While I understand that ethernet works best for situations like these, I do not have an outlet of that sort in my room/apartment. Additionally, I have previously played competitive shooters on wifi and did not experience these types of ping spike/packet loss. What is the best way to fix this issue?