There is an immense amount of proof for the truth of Islam, you just have to look for it.
Also make sure that you actually use authentic sources instead of listening to people who quote fabricated ahadith, twist the words of the Prophet ﷺ, force a false interpretation, and/or stretch things to fit whatever they want. There is plenty authentic proof and we don't need to resort to what some Christians do today.
Check out this website, it has some authentic proofs on it and they seem to be making a list of 101 fulfilled Islamic prophecies right now.
https://www.provingislam.com/