Ok so the cult app has an amazing beginners course for meditation. It's by a psychiatrist called Dr shyam bhat and he's a super popular mental heal professional in India. Those sessions will get you up and running within a week and will help you inculcate a long term habit. Just follow them
These sessions are accessible even when you have only the online program package of cult.
My only piece of advice here is to not try too many different things you'll get confused. Just stick to this one. They have mini series for focus as well but it's a good idea to get the basics down first. It's called the foundation course on meditation. Just 10mins.
Also just take it one day at a time and trust the process. It's something that wil show you immediate results but long term benifits (as i. Experiencing now) is immense and life-changing.
Just take it easy on yourself. Remember to take it slow and that you have the rest of your life ahead of you. This is just one step in the right direction.