mysql how use as subquery

Question

example data

date	tomato	phone	book	pen
2022-05-15	2	2	3	1
2022-05-15	3	3	3	2

i want see

date	tomato	phone	book	pen
2022-05-15	5	5	6	3

i use this

insert into sales.copy 
select date, 
       sum(tomato), 
       sum(phone), 
       sum(book), 
       sum(pen) 
from copy 
where date = '2022-05-15';
GROUP BY date

delete from sales.copy
where date = '2022-05-15' and tomato < ( select max(tomato) from sales.copy where date = '2022-05-15' );

doesn't works part

delete from sales.copy
where date = '2022-05-15' and tomato < ( select max(tomato) from sales.copy where date = '2022-05-15' );