Porn Endgame: Captain Marvel, Black Widow, Spider-Man top Avengers searches
https://www.cnet.com/news/porn-endgame-captain-marvel-black-widow-spider-man-top-avengers-searches/
As far as specific characters, MCU newcomer Captain Marvel (played by Brie Larson) led the list, followed by Black Widow (Scarlett Johansson), Spider-Man (Tom Holland) and Hulk (Mark Ruffalo).
Courtly Captain America (Chris Evans) was next, followed by Scarlet Witch (Elizabeth Olsen) and Gamora (Zoe Saldana).