how much money needed?

Hi everyone first-time solo travel here M23,

I already have my planes, trains, accommodation prices sorted .

I need to know how much euros should i bring in cash or expect to spend for . I was thinking of bringing 2000 euros, and using my Credit card for anything else.

Amsterdam 4 days
Budapest 4 days
Vienna 4 days
Naples 4 days
Florence 4 days
Rome 4 days
Athens 4 days

I know it all depends on how i want to spend it and lifestyle, etc. But let’s talk about the average person, one who values saving but wouldn’t mind spending occasionally :)

how much money needed?