With DateTime (DateTime::Format::Strptime):

use strict;
use warnings;
use DateTime::Format::Strptime;

my $parser = DateTime::Format::Strptime->new(pattern => '%d/%m/%Y', on
+_error => 'croak');

my $dt = $parser->parse_datetime('28/05/2023');

print $dt->subtract(days => 1)->strftime('%d/%m/%Y'), "\n";
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Hope this helps!