Welcome back man.
No reason to be scared, nervous or worried. I see many have suggested getting back into it with CC Freerolls which isn't a terrible idea and actually a pretty good one. You can simply start there if you want. At the same time you can also...
What I would do is deposit $50 on your favorite site and start at 2nl full-ring tables. 2nl full-ring cash will be the easiest, softest and offer less variance then anything else you can find right now online. 2nl is nothing to be scared of and still pretty easily beatable even today in 2024.
There's also no reason to spend money on poker info, knowledge, courses, books or anything like that. There's enough free stuff on the internet too be found that can have your game beating 2nl, 5nl and even 10nl. Be forewarned thou it might not be as easy nowadays as what you were use back when you use to play.
Best of luck man.
Cheers!!!