You can do-it-yourself SEO with Bubble if you are willing to do the work. It is one of the forum’s favourite subjects 
Do your own forum searches but for example …
https://forum.bubble.io/t/seo-links-single-page-apps-best-practice/328861
https://forum.bubble.io/t/three-non-obvious-seo-tips/251692/3
https://forum.bubble.io/t/i-am-looking-for-some-seo-tips-audit/244675
and many more …