Need Suggestion- skill development

Hi friends, I'm planning switch company before that I need to skill up, I have 3 years experince in development project which include both backend, front-end and also mobile development I have more experience in backened(.net- around 3 years) than frontend(angular- 6,7 months) and mobile development(xamarin-3,4 months). Please suggest me which domain I can skill up for immediate switching? I planning to skill up - .net, Angular, sql, entity framework core, asp.net web api, asp.net mvc. Please give suggestions and opinions whether I'm in right path or should I need to focus on anyone backened or front-end?

If you any good course or playlist links for the above mentioned course plz send that also.. Thanks.