iterate over a list of url in r

i want to import a txt that have a list of urls and extract from each one and save that in a cvs file but i get stuck

First i import the txt no problem but when a i want to iterate over each row i just extrat from the first one

library(rvest)
library(tidyr)
library(dplyr)

for(i in seq(list_url)) {
    text <- read_html(list_url$url[i]) %>%html_nodes("tr~ tr+ tr strong") %>%html_text()}

i just get the result from the first url in a value form , i want a dataframe of all the the extract from the urls