This is a paginator class for generating your paginated collections from your given collections. You don't need to touch it. Your main target is to generate two collections, merge both of them and finally make a pagination.

call-paginator.php

Route::get('view-paginate-data', function () { //todo:: run this code where your business logic is written
    $firstCollection = DB::table('forms')
        ->where('sti_type', 'Strings') //todo:: write logic according to you
        ->limit(5)
        ->get();
    $secondCollection = DB::table('forms')
        ->where('sti_type', 'Welltest') //todo:: write logic according to you
        ->limit(10)
        ->get();
    $mergedCollection = $firstCollection->merge($secondCollection);
    $paginatedData  =  \App\Http\Controllers\PaginatorClass::paginate($mergedCollection,5); //we are showing 5 items per page.
    dd($paginatedData);
});

PaginatorClass.php

<?php

namespace App\Http\Controllers;

use Illuminate\Container\Container;
use Illuminate\Contracts\Container\BindingResolutionException;
use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Pagination\Paginator;
use Illuminate\Support\Collection;

class PaginatorClass extends Controller
{
    /**
     * Call This Method From Anywhere of your class
     * @param Collection $results
     * @param $showPerPage
     * @return LengthAwarePaginator
     * @throws BindingResolutionException
     */
    public static function paginate(Collection $results, int $showPerPage)
    {
        $pageNumber = Paginator::resolveCurrentPage('page');
        $totalPageNumber = $results->count();

        return self::paginator($results->forPage($pageNumber, $showPerPage), $totalPageNumber, $showPerPage, $pageNumber, [
            'path' => Paginator::resolveCurrentPath(),
            'pageName' => 'page',
        ]);

    }

    /**
     * Create a new length-aware paginator instance.
     * This is paginator don't touch it.
     * @param \Illuminate\Support\Collection $items
     * @param int $total
     * @param int $perPage
     * @param int $currentPage
     * @param array $options
     * @return \Illuminate\Pagination\LengthAwarePaginator
     * @throws BindingResolutionException
     */
    protected static function paginator($items, $total, $perPage, $currentPage, $options)
    {
        return Container::getInstance()->makeWith(LengthAwarePaginator::class, compact(
            'items', 'total', 'perPage', 'currentPage', 'options'
        ));
    }
}