Problem connecting to applications on my iPhone 13 mini while connected to Wi-Fi

I have an iPhone 13 mini and I cannot connect to apps on my iPhone when the Wi-Fi is on. I changed browsers from Safari to DuckDuckGo. And then I switched back because that did not help. I have also disconnected my VPN, cleared my history and website data from Safari, disabled private relay temporarily, and turned off Wi-Fi assist. None of these helped. after switching browsers, I cannot get into any of my apps on my phone, even though I switched back to Safari.

Any idea how I can fix this?