How do I politely and professional say no, or just shut up and suck it up.

I work at a small start up as a full cycle AE. I love my job and my team and am very thankful to be working at a company which is growing in this market.

However, I am doing so many tasks outside of selling and even though its helping the company and I was asked to do these tasks, it's impacting my ability to do my day to day tasks related to selling, like cold outreach.

I not longer want to do some these task but there is really no one else to do them. How do I communicate this with my boss without looking like I am not a team player? Or should I do this extra work until we finally get another round and hire an ops and HR team and more marketers? I am not interested in stirring the pot or creating tension, as my anxiety is already higher will all these layoffs.

(For reference, some these tasks are training sessions for new and existing staff, setting up training sessions, some customer success tasks, organizing events, doing followups for other accounts which are not mine, data cleaning and organization, interviewing candidates)