There really isn't that much anti-English sentiment any more. It's much less now than 20yrs ago imo. We've got used to having other migrants as well, so it is becoming more mixed (in places). Definitely don't base a decision on any perception of an anti-English sentiment, that no longer exists. (the racists have moved on to new targets).
There is the Anti-Westminster sentiment (ie SNP) in patches too, but in normal life, people are just people, and mind their own business.
Lots of Scotland is scenic and pretty (green, hills, wildlife, outdoor stuff), but lots is horrid little old-fashioned towns. There is much less facilities here - due to geography, your hospital will be farther away, shopping centres will be smaller, public transport sh#ttier.
Bear in mind the law is different here - alcohol driving levels etc, Covid_19 laws, School system, lots if things.
Come and visit! You cannot base a major re-locating decision without stepping foot in the place.