My job is manageable, workplace not toxic but the only thing which is not so ideal is the salary. It is enough to live comfortably no fancy expenses etc. Should i look for a higher pay job?

Mostly higher pay equal higher responsibilityes unless you are lucky enough to get one with higher pay, and same current working envrionment. A job that could stay for longer period will also depending on your manager/supervisor.

Is there ways to increase your salary? promotion?

Consider job satisfaction, work-life balance, and financial goals. If a higher salary aligns with your objectives and market standards, exploring new opportunities might be worth it. Evaluate the overall impact on your well-being and career growth.

For higher pay, definitely have to take risk