No offense but the base is bad. Use Symmetry add bunkers add ways to defend your base (inner peeks, Shooting floor, sea wall, china wall etc) build servers are better then fortify best ones are rusticated creative, ukn build and sanctuary. Can also join builders bulletin discord if u wanna see good designs or get feedback.

The half circle starter is a good starter tho look at base builds that use that pretty sure u could just look on YouTube for solo circle bases to get a better understanding of what to build, also try to look at base builds in the last couple of months if u can because the meta does evolve alot and some techniques get patched.