You could give Joplin a try (https://joplinapp.org It has a web clipper which works very nicely and which also cleans and sanitizes the HTML. It's open source and actively developed, only negative: you can only have one database, so if you plan to use it also for your personal notes etc it can become crouded (but works fine for me so far).

Other options (they all have some web clipping features)
Trilium (https://github.com/zadam/trilium
InfoQube and IQOutliner (https://www.infoqube.biz
QOwnNotes (https://www.qownnotes.org
Notion

So far Joplin feels best for me, but all do the job.