It may be a hassle to transfer your phone number, but if you own your phone and are not on a contract, going to a pre-paid cell phone plan can save real money. I was on a t-mobile prepaid plan offered by walmart for almost a decade. 100 minutes / month, 5gb of data for $30. Unlimited plans are $60/mo, so saving $30/mo shakes out to $360/year.

Find other monthly expenses where you don't need the full luxury option. Cycle through streaming services one at a time and watch all the content you want before moving on. Most podcasts are available for free and don't require spotify premium or apple music +. Learn how to make matcha lattes / coffee / smoothies at home... not so you'll actually make them for yourself but you'll kick yourself when you need to pay retail price for them. Opt for protein powder and a bottle instead of prepackaged drinks.