College and the age gap

hey everyone I just completed my 12th and I am 18 rn, but I wont be joining college this year as I am taking a gap year due to personal reasons and also because I am not quite ready to go (sorry if that sounds dumb) But I'll be going to college next year and I will already be 19, considering my course is for 3 years I will be 22 by the time I finish my bachelors but I see so many people already done with their masters by the time they are 22 and that kind of worries me. Am I going to be left behind? Will it be a problem for me when I apply for masters at 22 or is it okay to complete your undergrad by the age of 22?