To remove numbers from a string, for a single cell
=CONCAT(TEXTSPLIT(A2, SEQUENCE(10,,0)))
Using REGEX
=REGEXREPLACE(A2, "[0-9]", "")
To remove numbers from entire range
=BYROW(A2:A10, LAMBDA(a, CONCAT(TEXTSPLIT(a, SEQUENCE(10,,0)))))
using REGEX
=REGEXREPLACE(A2:A10, "[0-9]", "")
The Excel file for this tip can be downloaded from Tips & Tricks 201 – Remove Numbers from a String