Google Maps shows one notification for me, about scheduled engineering works between Dordrecht and Lage Zwaluwe. These don't affect a journey from Leeuwarden to Eindhoven. So yes, you can travel by train from Leeuwarden to Eindhoven via Utrecht on Friday.

In the future, I would advise you to use the NS journey planner at www.ns.nl to check which trains are running. Moreover, in case trains aren't running due to scheduled engineering works, you can still buy tickets because these are valid in the replacement bus service. Being able to buy tickets therefore says nothing about whether or not the trains are running.

Leeuwarden

Intercity638Rotterdam Centraal

 1 h 55 min (fără oprire) · Peronul 4

Servicii întrerupte

Construction

"Due to construction work from Thursday 20 October to Sunday 6 November, there will be no trains but buses between Dordrecht and Lage Zwaluwe." - ns.nl

Valabilă de pe 20.10.2022, 00:01 până pe 06.11.2022, 22:59

Serviciu furnizat de Nederlandse Spoorwegen

12:42

Utrecht Centraal

Utrecht Centraal

Intercity3043Eindhoven Centraal

 49 min (fără oprire) · Peronul 18

Servicii întrerupte

Construction

"Due to construction work from Thursday 20 October to Sunday 6 November, there will be no trains but buses between Dordrecht and Lage Zwaluwe." - ns.nl

Valabilă de pe 20.10.2022, 00:01 până pe 06.11.2022, 22:59

13:43

Eindhoven

this is what google maps tells me when I want to travel.
So it's not valid right?

I can travel peacefully

What Google Maps tells you is not technically incorrect, as there are indeed buses instead of trains between Dordrecht and Lage Zwaluwe, but that's irrelevant for you since that trajectory is not part of your journey. As I said, use the journey planner on www.ns.nl instead and don't use Google Maps to plan your train journeys.

I want to arrive on Friday, 28.10 from Leeuwarden to Eindhoven airport. I usually use google maps because it takes me exactly to my destination. Could I use ns.nl for this? is there a gps app?

You can plan a journey to a destination that's not a train station:
 

You can use Google Maps to guide you from the train station to your destination. Just don't rely on Google Maps for the journey from station to station and use the NS journey planner for that.

ok, so there is no problem with the line leeuwarden - utrech - eindhoven

I can travel quietly by train

Yes, that is correct.

You better buy a map.

From Leeuwarden to Eindhoven via Dordrecht???

can you explain me please?

Because on a map you would immediately see that Dordrecht is completely out of the way.

I don't understand why Google Maps is giving this misleading information.

thanks a lot for help 

Google maps is acting a little weirdly. It says that all NS-trains everywhere in the Netherlands are cancelled. Tis is not true. It has been saying this for like a month now, I don't know why. I would not at all trust google maps right now.

Hmm indeed, it adds the disruption between Dordrecht and Lage Zwaluwe to any NS route. I even get it when planning a trip from Amersfoort to Utrecht.