The websites below will help you find information on the different festivals.
Carnaval de Santa Cruz de Tenerife
https://carnavaldetenerife.com/
https://www.spain.info/en_US/que-quieres/agenda/fiestas/tenerife/fiestas_de_carnaval.html
Semana Santa en Sevilla
https://www.spain.info/en_US/que-quieres/agenda/fiestas/sevilla/semana_santa_de_sevilla.html
https://www.visitarsevilla.com/experiencias/semana-santa/consejos-semana-santa-sevilla/
Semana Santa de Antigua, Guatemala
https://www.theguardian.com/cities/2017/apr/10/antigua-spotlight-semana-santa-holy-week-visitors
https://www.gratefulgypsies.com/semana-santa-antigua-guatemala/
Carnaval de Oruro in Bolivia
https://www.bolivianlife.com/carnival-in-oruro/
https://ich.unesco.org/en/RL/carnival-of-oruro-00003
https://www.aracari.com/blog/stories/at-the-oruro-carnival-bolivia/
Inti Raymi in Peru
https://www.theonlyperuguide.com/festival-sun-inti-raymi/
https://www.peruhop.com/history-of-inti-raymi/
San Fermin in Pamplona, Spain
https://www.runningofthebulls.com/san-fermin-festival/
https://www.spain.info/en_US/que-quieres/agenda/fiestas/navarra/fiestas_de_san_fermin.html
Vendimia en Argentina
https://www.mendoza.travel/en/origenes-vendimia/
https://therealargentina.com/en/get-the-grapes-in-mendozas-vendimia-harvest-festival/