3 matches you say at above are very difficult to predict, IMO. On Sevila vs Real Sociedad match, indeed Sevilla may have high a chance of winning. Considering that Real Sociedad also has not shown a good performance recently, especially at next they are faced with an important match in the UCL in a few days. But it doesn't close the possibility if Real Sociedad will try their best to get at least one points, so on the other side I doubt Sevilla win. Based on head to head Sevilla vs Real Sociedad, in five they last matches also Real Sociedad is ahead than Sevilla.
Atletico Madrid match, they have the capacity to win against Real Betis. But for Athletic Bilbao, I doubt Barcelona will lose. So I think it would be Draw, Atletico Madrid, Draw.