Unable to Constrain Sketch

[manlieststuff]

I am having a very difficult time understanding why my sketch isn't fully constrained. I'm new to the Fusion software and some parts are constrained, but most are not (the holes/right wall). I tried following previous forum answers, but got lost in translation.. I attached my file below. Any help is greatly appreciated - thank you!!

[jhackney1972 · Accepted solution]

Self-Explanation video is attached.  I added your model after my corrections.

Edit: If I answer your question, please select the "Accept Solution" icon on my post.

[manlieststuff]

Super helpful! Thanks @jhackney1972 for your help & thorough/straight-forward tutorial. Appreciate it!