I will rate it 5/5 ⭐ because of best story selection for solo movie - Flashpoint, direction, Ezra Miller acting, animation + visual effects, action scenes specially first 10-15 minutes slow motion ones.
This movie includes lot of hard work of various movie team from around the world as I saw in end credits too. Only one end credit scene of Flash Aquaman is weak/small, that too at end of movie movie after credits.
Movie is entertaining, will lots of slow motion animation + visual effects scenes of Flash running around saving people. Plot rotates around Barry desire to bring back his mom alive, which leads to Space Time Paradox & disruption. Plot basic is similar to Spiderman-No Way Home.
Movie is best suited for 3D, IMAX, 4DX. I saw on 2D, theatre was almost full, it was amazing. Movie is long 144 minutes, with few dialogue based serious scenes in midst, but never boring. Animation + Visual Effects is commendable in beginning & end.
Overall, I ask you to watch this movie asap in a Flash ⚡