Claiming back money paid for investment after breaching obligations

Before 2 years, I gave a loan to the owner of an advertising company. He was getting an order of advertising on a 2-3 month credit basis.

However, he did not have the cash amount to pay the suppliers; hence, I gave him a loan against a share of transaction profit.

Against my cash cheque, he was giving me 2-3 month post-dated cheque for the amount value of cash paid + the profit.

Things went well until the very last cheque bounced with an amount value of AED 80,000.

Further, I gave the same owner but under a different company (gym business) AED 100,000 to purchase new gym equipment.

He gives me rent of 3K per month until 6 months and after that, he pays me 114K to own the gym equipment. Only 2 x 3K cheque cleared but the rest bounced.

Now, I'm left with 80K cheque from the advertising company, 3 x 3K from the gym company, 100K from the gym company, 14K from the gym company.

Can I legally proceed and successfully get my money back? What are the procedures and how much will it cost?

Thanks