Why is rm not working?

Question

linux

# touch 1.txt
# touch .txt
# ls -a
1.txt .txt
# rm *.txt
# ls -a
.txt
Why does .txt stay? * Means both any number of characters and their absence, no?

Answer 1

just * does not dereference hidden files (those that start with a dot)
you can see for yourself:
# ls -a *.txt

Answer 2

Good evening.
rm -f *.txt
or
sudo rm -f *.txt
But first think before using sudo