I’ve been looking for investment opportunities among UK shares for my ISA this year. And here are three I’d add more of to my portfolio right now if I had the cash. I first invested in Alpha Group International (LSE:ALPH) in 2020. What started out as an affordable currency-risk management service for small- and medium-sized businesses has evolved into a full-on alternative banking platform. The group now supports a vast array of services, from international payments to alternative investment management. And this business success has also translated into jaw-dropping share price returns, making it one of my largest portfolio positions today. Recent macroeconomic headwinds have proven challenging as they’ve wreaked havoc on Alpha’s customers. The business has managed to maintain double-digit growth in spite of these headwinds. But it’s been considerably slower than its usual rate of expansion. And continued uncertainty within the financial markets could handicap growth and boost competitors. Fortunately, the latest results revealed encouraging trends, with July and August showing signs of improvement. And with the shares taking a recent tumble, I may think about buying more. Following the boom of e-commerce activity after Covid-19, digital advertisers have been stuck in a long winter of customer budget...