Keep things simple to avoid overwelm, especially when you're getting going.

Try to bike 3 times a week if you can: One long ride, one ride where you climb some hills (find a hill that takes you 3-8 minutes to climb... do it as fast as you can a few times), and one interval ride (go all out for 1-2 minutes; recover 1-2 minutes, repeats 4-8 times).

Strength train twice a week. Keep it simple. Day 1 do squats, a pulling movement (like a row), and a core movement. Day 2 do lunges, a pushing movement (like pushups), and a different core movement. 3 rounds of each exercise, 8-15 reps.

Take one-two rest day a week, and call it good.

If that's too much volume, start with 2 riding days and 1 strength day a week, and build up from there.

Feel free to PM me if you want to get more specific. Happy to help.