Difficult situation with entry to the UK

Good afternoon, dear friends!

I have this situation:

My girlfriend and I are citizens of Uruguay, we do not need a visa to England. I came to the UK several times for the purpose of tourism and realized that England is very interesting to me and I would like to stay there legally, as a businessman, through special start-up, innovator or global talent visas. My girlfriend went to College in England, got a student visa and lives there permanently, we bought an apartment in London to avoid renting, as we find renting inconvenient.

I last stayed 7 months from the date of entry, I was able to stay in England for another month, as I was undergoing treatment and received exceptional insurance. I left on time as expected. Within 7 months I received a letter from endosment body and all I needed to get a start-up visa was the IELTS English exam. I decided to do this at the last minute. I went to France in a Eurostar, and a couple of days later I tried to go back to England to pass my English. But they didn't let me in at the border. They took me back to France.

Further, on the same day, I flew to Ireland (in most countries we do not need a visa). On arrival in Ireland, I had a long conversation with the immigration officer, after which he let me in for 7 days. On the morning of the same day, I flew from Dublin to London, I wanted to re-chat with the officer, I bought a return ticket, I wanted to show him that I was coming to pass English and leave for my country to apply for a long start-up visa. But there were no checks, either in Dublin or in England itself. Just a direct output without any control. Further, I stayed there for 4 days, checked the time in England, did not have time to pass the exam, and was forced to fly to Ireland. On the way back, there was a border and they talked to me for about 30 minutes, shouted at me and cursed that I was a bully))) As a result, they let me in exactly before departure.

Now, a month later, I am in France and plan to fly to Dublin to take my English there. My question is, what problems can I have in the future and what would you do in my situation? I have all the documents ready except for the English exam, but will this refusal of entry affect the start-up visa?