open _config.yml file on root directori : adding new plugin config.

plugins:
  - jekyll-paginate

at same file on _config.yml, adding pagginate configuration :

paginate: 6
paginate_path: /page:num/

open gemfile on the root directori :

group :jekyll_plugins do
  gem "jekyll-feed", "~> 0.6"
  gem "jekyll-paginate"
  gem "jekyll-coffeescript"
  gem 'jekyll-sass-converter'
end

and than open new terminal, and installing plugin :

gem install jekyll-paginate

create paginate post list with css class bootstrap v-4.3

and this is in my layout post list on jekyll :

<div class="row justify-content-end">
	<div class="col-xs-12">
		
		
	<ul class="post-list"> 
	
	</ul>
	
		  <div class="container">
			<div class="row justify-content-center">
			  <div class="col-xs-6">
				  <!-- pagination -->
				  <nav aria-label="Page navigation example">
					  <ul class="pagination pagination-sm">
							
						<li class="page-item disabled"><a class="page-link"><i class="fas fa-fw fa-chevron-left"></i> Prev</a></li>
					  
	
	  <!--                  -->
	
					  
						<li class="page-item disabled"><a class="page-link"> Next <i class="fas fa-chevron-right"></i></a></li>
					  
				  </ul>
				</nav>
			  </div>
			</div>
		  </div>
	
		</div>
	  </div>