https://www.bestbuy.com/site/tp-link-archer-axe7800-tri-band-wi-fi-6e-router-black/6522470.p?skuId=6522470

im glad you are here to straighten me up. thank you im going to delete my comment now

im no expert but that picture right there is telling you that your adapter is only 100Mbps

i was just dealing with similar situation yesterday. After i reset my modem with a paper clip it came back to normal speeds

i have an auto restart setup every night at 3am