The general answer to this type of question is no. From generation to generation phones will have different locations for ports, speakers, microphones and buttons. That's not even taking into account different dimensions or styling features (like the radius of the corners or a curved back) that cause cases to not fit properly. Just looking at the pictures I can tell you it won't fit...
Stylo 5 -
https://www.gsmarena.com/lg_stylo_5-9758.php
Stylo 4 -
https://www.phonearena.com/phones/LG-Stylo-4_id10876
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