Is there any risk of losing my funds?

I created an offer to sell btc and left my computer online for several hours. But I accidentally turned it off from power, and I am a bit worried about reserved funds. There is nothing wrong, bisq app says I still have them in my account. Anyway, might there be any issue with that in future?

No. Your computer needs to stay on in order to broadcast the offer but turning it off won’t make you lose your funds.