Struggle to create a plan

Hello, I want to get fitter but I have struggle to find a plan or to create one just because I don't have the knowledge for. I do own a Garmin watch and I do use the Garmin connect app which is very good. However it only has training plans for running etc. I currently do the 5K plan.

But my goal is not only to get good at running or only build muscles but a good mix and a good balance. My primary goal is to be healthy and to make my body make use of what is capable without going in the extremes in one specific direction.

I do each an hour training on Mondays of Kung Fu, Qi Gong and Tai Chi which is very good and I currently because of the plan on Garmin do make a run every Tuesday, Thursday and Sunday. I just started and can run about 3km without problems at 7:30 per km but going faster or wider is a struggle because of the fact I just started.

For workout I want to train mostly at home with my own bodyweight and dumbbells because the gym is about an hour drive away and I just don't have the time for it.

I googled a bit and found Freeletics but it's not useful for me because it doesn't sync with Garmin so it wouldn't be aware of my runs I track there or other stuff.

So yeah I want to find a balance between building muscles, cardio trough running and becoming more flexible which is useful for everything and also necessary for Kung Fu. But I can't figure out a training plan because the topic is way to complex to get through. All sources tell you something else i.e. you shouldn't do that exercise because it has a long term negative effects or something else. Then you need to know which exercises train which muscles and how long to rest and how to progress, nutrition and whatever else. So yeah maybe someone of you can help out with my struggle. In the best case I'd have something that progresses with my own progress and works good with Garmin (or connected services that automatically get Garmin trainings synced like Strava). If it's an app it doesn't need to be able to track trainings I just need to have a plan. Tracking works well with Garmin.

I also need some flexibility in case I have a day where I can't do a training. So something where no day can be left out like some apps have it would not be something useful.

It also doesn't need to be an app. Whatever works works. I'm just looking for some solutions.

Thank you in advance!