For the past year I have been looking for a place to buy as an income/airbnb to buy in Mexico and have inquired about Playa del Carmen and Tulum and keep coming back to Tulum as it seems like it has the potential for growth with airport coming and simply more infrastructure.

I'm      particularly interested in exploring the BRRRR strategy, despite the initially lower monthly cash flow.Long-Term Goal:- The ultimate objective is to achieve a monthly income of $15K+ through real estate investing within the next 10~15 years.I greatly appreciate any guidance, tips, or perspectives you can share based on your experience.

They either miscalculate repair costs, have not really secured the contract, or have no idea what the ARV is and are just spitting numbers out.

Or, your sellers could consider syndicated deals put together by reputable real estate investment firms that would allow the sellers access to income-producing assets that are professionally managed.  

Do you have another income source right now?

So wanted to know is there any way or tips if you have, to assume Loan (may be VA loan) when my debt to income ratio is high?

I used to think that Section 8 was guaranteed income for Landlords, I neglected to think about the Loafers who still refuse to pay their half or percent, thanks for the lesson!

Doesn't necessarily have to be DSCR if you can qualify with DTI, employment and income being factored in. 

The context is the tenant caused a lot of damage to the property and I am keeping all the security deposit towards repairs.

Lender's typically offer the best terms when they can secure a senior/first position lien.It may be more beneficial to find a partner, instead of a lender, who can help fund your acquisitions.