I had the same doubts before my last vacation, but using an eSIM turned out to be much easier than I expected. I went with https://esimplus.me/ and everything worked fine from the start. The activation was quick, and I didn’t need to install extra apps or go through a complicated process. What I liked most was that the connection stayed stable even when moving between countries, which saved me from buying several local SIMs. It really made traveling less stressful