paste function to add data to dataframe in R

Question

I am working on a ShinyApp which allows users to dynamically add columns to a dataframe based on their input. If users make two inputs, then I want to add two additional columns to the dataframe. Depending on the number of inputs a user made, the name of the input function in the ShinyApp changes (if one input, the name is input$textin1; if two inputs the name is input$textin2).

That's what I have so far to produce the dataframe:

data <- data.frame(test=NA)
    
    for(i in 1:n){
      
      new <- get(paste0("input$textin", n))                   
      data[ , ncol(data) + 1] <- new                  
      colnames(data)[ncol(data)] <- paste0("new", i) 
      
    }
    
    data

However, the paste argument does not work.

What can I do to dynamically add data that is stored inside input$textin[number]?

(input$textin[number] actually looks like this: input$textin1 if one input was made or input$textin3 if three inputs were made.