Can you use a PCIe 16x card in a PCIe 1x slot?

PCIE x1 vs PCIE x16 pcie x1 in x16 slot Riser PCIE x1 to x16 GPU performance loss test in any games, compared with PCIE x16 from pcie expansion slot Intel no longer supports PCIe x1 controller cards plugged into PCIe x16 slots starting from the Alder Lake desktop PCs, which are HP G9 platforms

pcie slot x16 Pcie x1 slot blocked by my gpu, considering using the pcie x16 slot for my wifi card