If you’re in the EU you can do bank syncing for free with GoCardless integration. If you’re in the US you need to go with SimpleFIN which costs a small sum and is in a more experimental phase than the GoCardless integration I think. Either way, GoCardless has been working great for me. Actually far better than YNAB which didn’t even support my bank. It’s literally just set up and forget.
Yes. You can read about on Actual Budgets documentation. It’s free for personal use. You just generate an API token. https://actualbudget.org/docs/advanced/bank-sync/gocardless/