Woocommerce Website Need To Be Optimized.

Don't Bid Without Checking The Full Description....This Job Is For Hindi Speaking Indian Person Only..

This is about server optimization for my client's website: https://www.addmecart.com/ ( It's a wordpress woocommerce multi vendor website )...

Website has heavy traffic: Over 1.5 lakh per day...

Currently it is hosted on cloudways.com and the plan is: Digital Ocean 96 GB Singapur IP (server cost: ₹98000/month)..

I already disabled many plugins those are not required and removed plugins those were creating queries and crashing the server...

I already disabled all user logins but still if 5 to 6 my team mates logged in to admin and started working on multi tab my server goes down.

Do you think it can be solved by switching to another hosting? I'm thinking to use HOSTINGER CLOUD ENTERPRISE plan.

Or do you suggest to optimise the website?

Please let me know your thoughts on it. Can you sort this situation?