I am kind of a saver. My husband has managed his own office and I help him at home. We are both translators. Our income is not stable. Of course, as of now, we no longer worry about money. But in the early time of our marriage, we had a hard time to manage our life because of short money. So, whenever we could earn more money, I saved money in the bank. We finally could buy this apartment with that money. Now, I could be a spender but I am still a saver. We have a plan to go abroad for a trip when the corona19 is over. It is good to save money and make plan to spend it for a trip. Bye  

(06/11/21)

-제 의자 좀 눕혀도 됩니까?

-Can I lie down my chair? -> May I recline my seat?

-여기에 가방을 좀 놔둬도 되겠습니까?

-Can I put the bag here? ->Do you mind if I put my bag here?

=> Another way: Your sentences are okay and these are other ways of saying them.

-안전벨트를 매어 주십시오.

-Please tighten the seat belt. ✔

=> Corrected: The sentence is corrected grammatically.