Videos
Basically: Use prepaid cards
You can always just cancel the subscription but - i always forget 14 days later.
You may also just not want to have your info online.
The solution is buying a 25$ prepaid card, swiping it on whatever and the with 4 dollars on it, you can sign up for all the free trials doing this and theres no risk of you losing money - after 7 days, the payment doesn't go through. Sometimes they charge 1c
My Visa Vanilla card always works but recently i got a Joker Mastercard and it usually does not work for online purchases so watch out. Not a life changer but i dont feel as stressed or concerned about having to cancel the subscription that I only wanted to use once for a premium feature. If you really wanted to milk a site you could also likely just get a new email.
I learned this hack about a decade ago when a friend of mine told me he's been doing this for years. You know when you've got one of those Visa gift cards that seems worthless because it's only got like $1.50 left on it? If you put those in as your credit card information during any service that offers a free trial but asks for your credit card info, you can safely not have to worry about canceling the service before it charges you for it after the free trial. It will attempt to charge the gift card, get declined, and cancel the service for you.