Throughout 2019, Adobe has been expanding its seven-day trial to all Creative Cloud and Document Cloud subscriptions. That means that in 2020, when you sign up for one of Adobe's subs, you can try it out for seven days at no cost. You can also cancel it within those seven days without being charged.
An Adobe Creative Cloud subscription gets you access to all the best apps. The All Apps plan includes Adobe's 20+ applications, including photo editing favourite Photoshop and digital artists' go-to Illustrator. You'll also find the best video editing software Premiere Pro, web prototyping tool Adobe XD and motion effects creator After Effects among the impressive toolset. However, if you just want to test Adobe's standalone apps, then the free seven-day trial also applies to those too (here's how to download Photoshop for free or as part of CC).