Random Spawnpoint at Level Start

Add multiple Player Start actors to your level in different locations.

Open your Level Blueprint and add a Get All Actors Of Class node, connect it to Event BeginPlay.

In the Actor Class dropdown, select PlayerStart. Right click on Out Actors and Promote to Variable.

Attach the Out Actors Set output to a Length array node and a Get (A Copy) node. Add a Random Integer between the Length and Get (A Copy) nodes.

Attach the Get (A Copy) node to a Restart Player at Player Start node and attach the Exec white line.

Attach Get Game Mode and Get Player Controller nodes to the Restart Player at Player Start.