How do I fix the persistent Caps Lock issue on my iPhone 16 Plus?

NEW APPLE USER.....

HI BOUGHT MY APPLE 16 PLUS IPHONE IN JULY THIS EXTREMLY PLEASED UP TILL 3 DAYS AGO WHEN MY CAP LOCK KEY WOULD NOT UNLOCK NO MATTER WHAT I TRIED TO DO ,, READ UP VIA THE USUAL SUSPECTS ETC BUT NO JOY AS SOME ONE WHO IS ON THE WRONG SIDE OF 50 I HAV MASTERED QUIET A BIT OF TECH STUFF ,,BUT THIS SMALL POSSIBLE PROBLEM AS STUMPED ME ...

WHEN I TYPE ANY THING THE TYPE STAYS IN LOWER CASE ALL THE NO MATTER WHAT YOU DO ,HAVE TRYED TAPPING THE ARROW LOCK KEY QUICK BUT DOES NOTHING ,,,CAN YOU ADVICE PLEASE...

WORRED GRAHAM

[Re-Titled by Moderator]

Original Title: WORRED OLD MAN