I'm on wordpress.com too.
I would recommend wordpress.com. If, at some time in the future, you ever get your own website then you can install wordpress on it and download your stuff from wordpress.com and upload to your own site
Blogspot is owned by Google and all the baggage that goes with it
Wondering if you should create a free Blogspot blog in 2023? Don't do it. Click here to learn 11 reasons why you shouldn't use Blogger.
www.gotchseo.com
Here's a (probably biased) comparison
Trying to decide between WordPress vs. Blogger? Use our beginner's guide and list of pros / cons to decide which one is better: Blogger vs WordPress.
www.wpbeginner.com
and another
WordPress vs Blogger is one of the internet age's oldest rivalries, and we dive in to look at how the modern versions stack up to each other.
www.elegantthemes.com
All that said I have a problem with the direction wordpress is going. It's heading to all blocks, and I much prefer the classic wordpress, but then I am a web developer and like having micro-control over everything. But it's still preferable to being tied into Google