Using R- My for loop only works on first iteration - r

Question

I have a loop on each iteration does at least 1 and at most 2 API GET requests
I have a list of movies I loop through, I do a GET request to get the movies id corresponding in the API database, then I do a request to get the reviews using the movies ID.
I run the code and it works for the first movie but all the other movies remain empty. even when the first movie has no reviews.
Here is the code
for(i in 1:9964) {
id_url<- paste(url,search_title,key,COPY$Film[i],sep = "")
#GET request for movie
api_call_id<-GET(id_url)
#make readdble
read<- rawToChar(api_call_id$content)
#turn json into object
JSON<-fromJSON(read,flatten = TRUE)
if(is.null(JSON$results$id[1])){
break;
}
else{ #get the movie id from the json
id<-JSON$results$id[1]
}
#url to get movies raitings
raiting_url<- paste(url,raiting,key,id,sep = "")
#call
api_call_raiting<- GET(raiting_url)
#readble
read<- rawToChar(api_call_raiting$content)
#json
JSON<-fromJSON(read,flatten = TRUE)
if(is.null(JSON$rottenTomatoes)){
#set column value
COPY[ i, 'rTomatoes'] <- "No Review"
}
else{
#set column value
COPY[ i, 'rTomatoes'] <- JSON$rottenTomatoes
}