If there's one exercise resource I keep coming back to, it's Darebee (https://darebee.com/). They make evidence-based workouts for varying levels of physical fitness with no or common and affordable equipment, entirely free and without the need for an account or an app.
They're entirely donation-supported and they're currently in dire need of more funds. So if you have money to give, here's a worthy hat to drop a few bucks into.