Query problem -> wrong data

You can constrain eager loading:

$seminars = Seminar::with([ 'meetings.users'])->with(['users' => function ($query) use ($user) {
                $query->where('id', $user->id);
            }])->get();

@CIPSAS - This is not what I except. It's the same like my query but getting wrong date also

@KNUBBE82 - Sorry, then I don't understand your question

So meetings table is pivot table between users and seminars. If so

$seminars = Seminar::with(['users' => function ($query) use ($user) {
                $query->where('id', $user->id);
});

In the last query you are getting only the seminars that the specified user participated, but with all of seminars users. This here would do the trick. And if you need some info from pivot table, you can get it like described in the docs section Retrieving Intermediate Table Columns

I'm sorry think that you'll need to do it with ->whereHasToo() hence they're separate queries. So in the end I would try something like this

$seminars = Seminar::whereHas('users',function ($query) use ($user) {
                $query->where('id', $user->id);
})
->with(['users' => function ($query) use ($user) {
                $query->where('id', $user->id);
});

@NIKOS - I must have meetings and also meetings.users (meetings.users is pivot between users and meetings)

Then just add meetings.users

$seminars = Seminar::whereHas('users',function ($query) use ($user) {
                $query->where('id', $user->id);
})
->with([
    'users' => function ($query) use ($user) {
                $query->where('id', $user->id);
    },
    'meetings.users'
]
);

@NIKOS - yes but meetings.users must also be like $query->where('meetings.users.id', $user->id) and that's not work

This is approach that works:

$seminars = Seminar::whereHas('users',function ($query) use ($user) {
                                            $query->where('users.id', $user->id);
                                          })->whereHas('meetings.users', function ($query) use ($user) {
                                            $query->where('user_id', $user->id);
                                            })->with([
                                            'users' => function ($query) use ($user) {
                                                $query->where('users.id', $user->id);
                                            },
                                            'meetings.users' => function ($query) use ($user) {
                                                $query->where('user_id', $user->id);
                                            }])->get();