Choosing the right framework does matter

Been in SEO for couple years now and I'm trying stuff every now and then. Like most SEOs I started with WordPress and encountered typical SEO and ranking issues until it got me where I am today. Half a year ago, I published a Website I have coded myself with SvelteKit, thinking a self-coded website must be more worth (EEAT score, performance, less duplicate code whatev). As an experiment, I recently launched a website I have done with GODADDY WEBSITE BUILDER WHICH IS ON ITS WAY TO OUTPERFORM MY SVELTEKIT site. It took me less than 3 hours to build it from scratch with GoDaddy Website Builder. My spirit is crushed ngl. It took my SvelteKit site half a year to rank for 100 keywords (20 of them top 10) whereas is it took my GoDaddy Website 1(!) week to rank for 100 keywords (0 of them top 10). My godaddy website has 0 backlinks / 0 ref domains whereas my svletekit site has 200+ backlinks / 30 ref domains. Imagine I start building links for the Godaddy website..... Also, the content of my Godaddy website is literally keyword stuffing. I really hope that the Godaddy website is getting sandboxed SOON otherwise I'll have to rethink my approach on On Page SEO. Just wanted to rant, thank you for reading.