Using an If function, how do I change string of text in dataframe to another string?

using the following dataset

 structure(list(...1 = c(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 1, 2, 3, 4, 5, 6, 7, 8, 
9, 10, 11, 12), V1 = c("overstress", "flicker", "lotteri", "life", 
"charg", "capac", "health", "drain", "degrad", "protector", "bright", 
"use", "overstress", "flicker", "lotteri", "life", "charg", "capac", 
"health", "drain", "degrad", "protector", "bright", "use", "overstress", 
"flicker", "lotteri", "life", "charg", "capac", "health", "drain", 
"degrad", "protector", "bright", "use"), term = c("corr1", "corr1", 
"corr1", "corr1", "corr1", "corr1", "corr1", "corr1", "corr1", 
"corr1", "corr1", "corr1", "corr2", "corr2", "corr2", "corr2", 
"corr2", "corr2", "corr2", "corr2", "corr2", "corr2", "corr2", 
"corr2", "corr3", "corr3", "corr3", "corr3", "corr3", "corr3", 
"corr3", "corr3", "corr3", "corr3", "corr3", "corr3"), correlation = c(0.5, 
0.43, 0.42, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, 0.53, 
0.29, 0.25, 0.25, 0.23, 0.2, NA, NA, NA, NA, NA, NA, NA, NA, 
NA, NA, NA, NA, 0.45, 0.16, 0.15)), row.names = c(NA, -36L), class = c("tbl_df", 
"tbl", "data.frame"))

I am looking to change if the word is corr1, corr2 or corr3, to toil1,toil2 or toil3. I tried the following code, but only receive the following error term:

three_terms_corrs_gathered$term <- if
(three_terms_corrs_gathered$term  == "corr1"){toil1} else if
(three_terms_corrs_gathered$term  == "corr2"){toil2} else
{toil3}

Warning message:

In if (three_terms_corrs_gathered$term == "corr1") { : the condition has length > 1 and only the first element will be used. So it only changes to the first condition. What am I doing wrong?